Agreed. And there's nothing like beauties in a bigger tank. I used to keep them in a 4 footer. It was so satisfying watching them swimming around, investigating every nooks and crannies.
Great list! I haven't done an actual nano tank before but I like adding nano fish to bigger tanks. I currently have a school of about 30 ember tetras and 12 kuhli loaches in my 75 gallon, ~15 neon tetras (not green neons though), 8 otos and 5 female bettas in my 36 gallon, and then I plan on adding a school of celestial pearls to the 20 gallon tall I'm currently cycling.
CPDs don't do good with tall tanks. 20 long is a much better setup for 10-12 CPDs. males are very territorial (bottom area). speaking from experience. best luck though
This channel has always been the most helpful. I appreciate your soft tone and much inspiration for aquariums . It’s nice to see what’s possible. Keep shredding it 💕
When you're keeping the Psudomugils make sure you have a tight fitting lid , I lost 6 of them when they jumped out a tiny gap I had around the filter . Otherwise they are beautiful fish to keep
@@ahumanonplantearth5931almost all fish will jump, natural jumpers are more likely to jump but all species can jump due to stress and the like. You could try keeping the water level a bit lower from the lip of the tank or have a cover of floating plants to reduce the chance. A lid is highly recommended though since even things like snails can escape
Great episode. I think it’s great to redo these lists, with experience comes new choices and changes to your list. I am very interested in having some Dario Dario. I also want to learn more about cherry barbs, their colour and details are beautiful.
I have a little colony of the black tiger dario and they are probably my favorite of the nanofish I have. I like fish with a lot of personality and these guys have it.lol when the male is guarding his territory or eggs, and I come up to the tank, he will come at me like he is trying to act tough and scare me away. It's the funniest thing ever.
love love love the CPDs took me a long time to find some so i started breeding them, best decision ever. they are really shy on their own but in a tank with other little fish they are always out I have a few that school with ember tetras.
@@MJAquascaping yes, there are so many fish very beautiful and colorful. But now Myanmar is under military coup ,we can't enjoy our beautiful fish :( ,the electricity doesn't go well the shut down 2 times or three times a day.
Working on stocking my 33 gallon L with nano fish. This list is making me rethink my stock that I’ve planned for a year XD I had no idea gouramis could make noise, so cool! And those Dario darios I keep seeing you show off are so tempting. And I’ve recently come to love tiger endler tetras. Might start researching some of these guys to see if they’d fit in with my planned fish
The tiger endler is not a tetra. They are a livebearer closely related to guppies. You may have already discovered this, but some other person may not. Dario Badis are best kept singly or in a species only tank. They will get outcompeted for the live food that most of them require if kept with the other fish on this list. If being kept with shrimp, then the colony must be thriving or else the Badis will destabilize the colony due to excessive predation.
Great list... I am planning a new 60l cube nano tank in the new year and this will greatly assist. Though a betta will be the feature fish, need to be mindful
I'm in a similar situation. I have a Fluval Flex 15 (57 L, but really about 45 L of swimming space) with a male betta, a mystery snail and two Endlers. I chose the betta to be active but not aggressive (put betta containers together to see what the fish did), and he gets along well with his tank mates. I'm looking to add either a small school of nano fish or two slightly larger compatible fish, and this video was helpful. At the top of my list are the ember tetras, but I also have the opportunity to buy a couple of golden gardener killifish privately. I like the green neons a lot, but can't get them locally. One missing from his list is the honey gourami. I have two gold honey gouramis in a larger community tank and they are really nice fish. I'm not sure that a betta would tolerate them, though.
Neoheterandria Elegans are also cool nano-fish. The male is one of the smallest fish in the world. There are other life bearers fitting in the nano-category. I heard Pea Puffer is also a nano-fish, but they have territories. If I don't count Betta (which isn't nano-fish by size, but 12 gallons is okay), I'd say my favorite would be dwarf rasboras. Least Rasboras can fit in tiny tanks, they live for several years, reproduce rather easily, common in fish stores and they are rather hardy for nano-fish. Blue (green) neon tetras are also my favorite, but I'd give them at least 50cm long tank to swim. I like Corries and Ember tetras, but they get scared easily and moving them is often fatal. Even shrimp handle that better.
Love sparkling gouramis (a most underrated fish), and the darling of all … the clown killifish. I have both and am always wanting a bigger group of each.
Thanks for your video! I have a bunch of harlequin rasboras and a bunch of neon tetras in a 10 gal tank. They are doing really well. I really like some of your choices …..cheers
When it comes to a nano tank my top 3 are always between the Celestial Pearl Danios , the ember tetras and the harlequin rasboras! The pearl danios are my favourite but I keep 10 gallon nano tanks which makes it better for the embers and rasboras . Another popular suggestion would be pea puffers , I have heard many good things about them ! Have you kept them in the past ?
I like this video and hopefully you can make more about nano fish include the detail like you did... Some of your favourite fish same as mine.. Keep shredding it😁🐋🐋🐋
Brilliant video !! Thank you for sharing some undercooked species like the dwarf rainbows and killifish. Most channels post the same common nano fish so it’s refreshing to see a nice list of common and uncommon fish💯💯. My favourite is the pacific blue eye rainbows, they get a bit bigger but they are like little tuna lol
I have a new planted tank ive been cycling for a month. It had a lot of nice algae growing on the glass. I added 4 otocinclus and they worked so hard but in two days the cleaned the whole glass.
@@nikfarishezrienikishak8582 hey. What is MC? i got java moss, dwarf hair grass, floating lettuce, cryptocorine, vallisneria, moneywort. The otocinclus didn’t bother the plants at all.. if anything, they clean them. My little school of salt and pepper cory doras uprooted some plants but i replanted them deeper and they seem to be fine.
Hi they won’t uproot any plants at all, just make sure to feed them if they have now cleaned all your algae or they will unfortunately die which is common. I have 2 veg clips up all the time with spinach and red pepper or courgette and they love it. Also I put some powdered repashy in a small dish of tank water and squirt the plants with it from a turkey baster. In my experience they don’t really eat commercial food ie wafers, algae tabs etc. They are wonderful little fish.
Hi Mark, I found your videos are very helpful and informative. Especially the video about Algae. I will start to analyse the cause of the problem and then try your suggestions. Thank you for that. Oh yeah, may I ask are you using heater in your tank ?
Once again, a beautiful collection of aquascapes ! Wondering what the PH of your tanks are ? Also, on the topic of nano's, have you ever tried the fun, but rare variety called Least Killifish ? Despite their name, they are the smallest livebearer in the world. Lot's of fun character, and hardy. Their scientific name is, Heterandria formosa. They are mostly wild but there is an even rarer line that comes in a creamy gold coloring. Both should be snatched up quick if you find them. These lil guys are not the same as "millions" live bearing species, they're so small they drop one baby at a time...sometime two, so you don't have worry of overpopulating. Thanks for a great nano list ❣
I thought all corydoras like to hang on the bottom. Happy to learn I was wrong. Now I'm thinking someone should create an aquarium (a bigger one) dedicated to the different types of corydoras.
C. habrosus is actually smaller than pygmaeus unless you get a random big girl. And Poecilia wingei is not a guppy, but an Endler. Poecilia reticulata is a guppy. Your video shows hybrids of two species, so the reticulata species should be listed. Glad to see you included the green neon tetras. (they only look blue because of your lighting). Other than this, your list is similar to my own for the most part. And your tanks are immaculately scaped of course. Lovely.
Do pygmy cory stir up the soil in a planted tank? Bcuz 1 tank that has 4x pygmy is just a little cloudy. I change floss every 2-3wks. Upgraded to canister eheim. Tried clarity by seachem. But still not as clear as my other tank that has sand and gravel? Using organic soil with some black sand cap a thin layer only.
Hello! Like your video a lot, omg your tanks are just heaven in clear water 💙 I'm quite fond of nano fish myself; Could you advice me on how to enhance their colors? I have blue eyed pseudomugil and mine aren't as bright as what you show. Is there any food or water setting that might help? Many thanks and congrats for your wonderful work
I have a wonderful population of groups of at least 10 of white cloud mountain minnows, Zebra Danios, Checkered Barbs, rosy barbs, hillstream loaches, Amano shrimps, bladder and assasin snails.Works very well. Now I look forward to put my betta and his kuhli loach mates, Caridina shrimp, bladder and assasin snails into a 71 litre tank and to add otocynclus, amber and neon tetras.I love nano fish.It makes me said that people treat them like they treat birds= the smaller the bird the smaller the cage and the smaller the fish the smaller the tank. The moment I have put my cold water population into a 4 feet river like tank their behavior changed and I could see their happiness and their explored and using the full length of the tank to swim around and enjoy the wave machine current.
Which fish you recommend for surface on a mainly amazon aquarium, with low PH high temperature. I was thinking about brown pencilfish but even tho they are small, they are kinda long, 4-6 cm. Wanna go with Pigmy Corys and Green Neon Tetras and Otto.
Sparkling gourami won my heart over. They have SO much personality for such a tiny little fish.
Agreed. And there's nothing like beauties in a bigger tank. I used to keep them in a 4 footer. It was so satisfying watching them swimming around, investigating every nooks and crannies.
Honey gourami is weak and he die easily
Great list! I haven't done an actual nano tank before but I like adding nano fish to bigger tanks. I currently have a school of about 30 ember tetras and 12 kuhli loaches in my 75 gallon, ~15 neon tetras (not green neons though), 8 otos and 5 female bettas in my 36 gallon, and then I plan on adding a school of celestial pearls to the 20 gallon tall I'm currently cycling.
CPDs don't do good with tall tanks. 20 long is a much better setup for 10-12 CPDs. males are very territorial (bottom area). speaking from experience. best luck though
whew.. good luck on your betta sorority... hope it stays peaceful forever.
@@sagarm8005 11:00 11:00
This channel has always been the most helpful. I appreciate your soft tone and much inspiration for aquariums . It’s nice to see what’s possible. Keep shredding it 💕
When you're keeping the Psudomugils make sure you have a tight fitting lid , I lost 6 of them when they jumped out a tiny gap I had around the filter . Otherwise they are beautiful fish to keep
I have no lid , can you suggest me some fish which will not jump?
@@ahumanonplantearth5931almost all fish will jump, natural jumpers are more likely to jump but all species can jump due to stress and the like. You could try keeping the water level a bit lower from the lip of the tank or have a cover of floating plants to reduce the chance. A lid is highly recommended though since even things like snails can escape
I’ve heard rainbows in general jump. Sorry this happened to you. That’s awful. Thanks for sharing your experience with these super cool fish.
Do you have pseudomugil gertrudae or luminatus?
Hello, I would like to ask if neon simulans will be a good choice for the 30x30x30 nano cube
Great episode. I think it’s great to redo these lists, with experience comes new choices and changes to your list. I am very interested in having some Dario Dario. I also want to learn more about cherry barbs, their colour and details are beautiful.
I have a little colony of the black tiger dario and they are probably my favorite of the nanofish I have. I like fish with a lot of personality and these guys have it.lol when the male is guarding his territory or eggs, and I come up to the tank, he will come at me like he is trying to act tough and scare me away. It's the funniest thing ever.
I am from Myanmar and good to see Myanmar native fish in your video.
That little blue feeding basket is such a wonderful idea for mid-water feeders like my celestial pearl danios! Can I please have a link for one?
I purchased one of the RGB light screens you recommended, it’s absolutely awesome and totally transformed my shrimp tank. So happy!
I enjoyed your selection! Your aquariums are so creative too!
also i quickly went to go listen to what those sparkling danios sound like, and WOW! never knew a fish could be so loud!
Draft gorami also make loud sound in my planted aquarium
Grat video as always the galaxy rasboras are my favorite I love the way the interact with the plants and rocks!
Thanks for you videos MJ. I'm just getting back into the hobby and learning so much from your videos.
Welcome back! That’s great to hear 😊
Some interesting choices. I have some Embers too. Love that Scarlet Badis as well.
A few of my favourites from this list were corydoras hastatus , Dario dario , pseudomugil paskai , ember tetras and the celestichtys margaritatus
Great video,full of lovely fish especially the Dario Dario,never seen that one before.Can't wait to get some.
the spotted blue eye can also be found in northren parts of Australia :)
black tiger darios and red neon blue eye rainbows look amazing, never seen them before
Beautiful cinematography and very educational. A+ video.
Thank you very much!
Great list. I'm going to get some of them for my new fish tank. Thank you for sharing
love love love the CPDs took me a long time to find some so i started breeding them, best decision ever. they are really shy on their own but in a tank with other little fish they are always out I have a few that school with ember tetras.
I am from Myanmar. Our local fish looks good. Btw I like your video.
That's awesome! So many beautiful fish in Myanmar!
@@MJAquascaping yes, there are so many fish very beautiful and colorful. But now Myanmar is under military coup ,we can't enjoy our beautiful fish :( ,the electricity doesn't go well the shut down 2 times or three times a day.
Working on stocking my 33 gallon L with nano fish. This list is making me rethink my stock that I’ve planned for a year XD I had no idea gouramis could make noise, so cool! And those Dario darios I keep seeing you show off are so tempting. And I’ve recently come to love tiger endler tetras. Might start researching some of these guys to see if they’d fit in with my planned fish
The tiger endler is not a tetra. They are a livebearer closely related to guppies. You may have already discovered this, but some other person may not.
Dario Badis are best kept singly or in a species only tank. They will get outcompeted for the live food that most of them require if kept with the other fish on this list. If being kept with shrimp, then the colony must be thriving or else the Badis will destabilize the colony due to excessive predation.
I recommend the Getrudae Aru II species, more colored as the normal one and very beautiful to watch compeating to each other!
and dont forget the killifishs for really small tanks !
Great suggestions!
My favorite is the chilli rasbora. Loved the video 🙂
Pseudomugil luminatus is my personal favourite. Glad to see them in this list.
Great informative video, great list congratulations.
I really love nano fish!
I even enjoyed the commercial you made. Lol good stuff man
Great list... I am planning a new 60l cube nano tank in the new year and this will greatly assist. Though a betta will be the feature fish, need to be mindful
I'm in a similar situation. I have a Fluval Flex 15 (57 L, but really about 45 L of swimming space) with a male betta, a mystery snail and two Endlers. I chose the betta to be active but not aggressive (put betta containers together to see what the fish did), and he gets along well with his tank mates. I'm looking to add either a small school of nano fish or two slightly larger compatible fish, and this video was helpful. At the top of my list are the ember tetras, but I also have the opportunity to buy a couple of golden gardener killifish privately. I like the green neons a lot, but can't get them locally. One missing from his list is the honey gourami. I have two gold honey gouramis in a larger community tank and they are really nice fish. I'm not sure that a betta would tolerate them, though.
Neoheterandria Elegans are also cool nano-fish. The male is one of the smallest fish in the world. There are other life bearers fitting in the nano-category. I heard Pea Puffer is also a nano-fish, but they have territories. If I don't count Betta (which isn't nano-fish by size, but 12 gallons is okay), I'd say my favorite would be dwarf rasboras. Least Rasboras can fit in tiny tanks, they live for several years, reproduce rather easily, common in fish stores and they are rather hardy for nano-fish. Blue (green) neon tetras are also my favorite, but I'd give them at least 50cm long tank to swim.
I like Corries and Ember tetras, but they get scared easily and moving them is often fatal. Even shrimp handle that better.
Nano fish is very interesting. Focusing on such nano world, It's very wonderous. Thank you for introducing interesting fish!!
Please help :D
I want to have 9 fish combo for a 15 15-gallon aquarium (8 in red or orange color and one black). What are my best options?
I really like those light screens. 😍
Amazing detail and visuals! Great list and very informative Subscribed!
Thanks for the sub!
Love your tanks! They are absolutely gorgeous!
Beautiful selection.
As always Mark, excellent content 👍
Nice list. Actually had a couple I’d never heard of❤
You have such lovely aquascapes!
What is your favorite nano fish??? 😎
Equipment I like to use (affiliate links)
Tank
US: bit.ly/3EbkdxH
EU: bit.ly/3S3y9ht
Light
US: bit.ly/3S2WxjC
EU: bit.ly/3z6R16F
Filter
US: bit.ly/3yxFttR
EU: bit.ly/3eoYxUn
Clear Filter Pipes
US: bit.ly/3RsFJkT
EU: bit.ly/3AL5oyv
Substrate
US: bit.ly/3bux8yR
EU: bit.ly/3qhHDt4
Wood (similar)
US: bit.ly/3VmDUJ0
EU: bit.ly/3MwgKfm
Rocks (similar)
US: bit.ly/3yAO7Yk
EU: bit.ly/3Tn0tLX
Dwarf Hairgrass (Eleocharis parvula)
US: bit.ly/3VsJIR5
Umbrella Hair Grass (Eleocharis Vivipara)
US: bit.ly/3MpO9br
Riccardia moss
US: bit.ly/3SR3Zy9
Juncus repens
US: bit.ly/3yyJjmo
Crypt parva
US: bit.ly/3Cs0APn
Crypt lutea
US: bit.ly/3yBGDo7
Crypt walkeri
US: bit.ly/3rSxBzu
large school of green neon tetras!
Love sparkling gouramis (a most underrated fish), and the darling of all … the clown killifish. I have both and am always wanting a bigger group of each.
Can you make a big list of plant for no co2 aquariums?
rasbora galaxy, rasbora muskito, kubotai
Espei rasboras. Scaled down version of the harlequin rasboras
great video, really helped me narrow it down
Nice episode, so beautifull Aquarium. Blue and yellow fish👍
This video was fantastic! Thanks
Thanks for your video! I have a bunch of harlequin rasboras and a bunch of neon tetras in a 10 gal tank. They are doing really well. I really like some of your choices …..cheers
When it comes to a nano tank my top 3 are always between the Celestial Pearl Danios , the ember tetras and the harlequin rasboras! The pearl danios are my favourite but I keep 10 gallon nano tanks which makes it better for the embers and rasboras . Another popular suggestion would be pea puffers , I have heard many good things about them ! Have you kept them in the past ?
No never kept Pea puffers! Definitely still on my list to try!
The music here is great 😙👌🎶
I like this video and hopefully you can make more about nano fish include the detail like you did... Some of your favourite fish same as mine.. Keep shredding it😁🐋🐋🐋
Excellent song choice and video thank you!!
I kept alot of fish but this video had some actually interesting fish to possibly keep, great vid
love your videos dude
This was fun and inspirational ! Subscribed!
Brilliant video !! Thank you for sharing some undercooked species like the dwarf rainbows and killifish. Most channels post the same common nano fish so it’s refreshing to see a nice list of common and uncommon fish💯💯.
My favourite is the pacific blue eye rainbows, they get a bit bigger but they are like little tuna lol
This was a great list, nice to see some slightly more unusual options :)
Very very very interesting!thank for your great workshop!
I have a new planted tank ive been cycling for a month. It had a lot of nice algae growing on the glass. I added 4 otocinclus and they worked so hard but in two days the cleaned the whole glass.
Hey may I know what plants do you have? Do the ottos disturb the plants? I’m thinking of getting some but I have MC afraid they will be up rooted 😩
@@nikfarishezrienikishak8582 hey. What is MC? i got java moss, dwarf hair grass, floating lettuce, cryptocorine, vallisneria, moneywort. The otocinclus didn’t bother the plants at all.. if anything, they clean them. My little school of salt and pepper cory doras uprooted some plants but i replanted them deeper and they seem to be fine.
Hi they won’t uproot any plants at all, just make sure to feed them if they have now cleaned all your algae or they will unfortunately die which is common. I have 2 veg clips up all the time with spinach and red pepper or courgette and they love it. Also I put some powdered repashy in a small dish of tank water and squirt the plants with it from a turkey baster. In my experience they don’t really eat commercial food ie wafers, algae tabs etc.
They are wonderful little fish.
Great video! you had a lot of fish I haven't heard of in the hobby : )
3:31 What are those fine leafed plants?
I have like 8 ember tetras in my nano and absolutely love them 💪
I was waiting for a video like this from your side because I was very curious about thr fishes in your nano tanks
I love the rocket killis, green neon tetras and salt and pepper Cory’s the most
this was very hepful thanks MJ!!
If you like those killifish....you should look up some bumblebee gobies. They too are a great nano fish !
Beautiful tanks
Thank you kindly
Mark even today I was watching ur previous video about nano fish
great video, seriously amazing work!
Love this video, and coming from you I knew it would be good. Ik ben jaloers op jouw leven haha.
Pygmy corys, danios, tetras, rasboras and dwarf gourami are my favorites. Hope to get them all in one tank someday
Beautiful Tank 😉
Great video! And the last one, clownkilli is my favoriete.🍀🦐🌿😎👍
so many good picks endlers and pygmy cories are def my favourite
Super video 👍🏾
Thank you 👍
Hi Mark, I found your videos are very helpful and informative. Especially the video about Algae. I will start to analyse the cause of the problem and then try your suggestions. Thank you for that. Oh yeah, may I ask are you using heater in your tank ?
Beautiful fish in small aquarium👍
Once again, a beautiful collection of aquascapes ! Wondering what the PH of your tanks are ? Also, on the topic of nano's, have you ever tried the fun, but rare variety called Least Killifish ? Despite their name, they are the smallest livebearer in the world. Lot's of fun character, and hardy. Their scientific name is, Heterandria formosa. They are mostly wild but there is an even rarer line that comes in a creamy gold coloring. Both should be snatched up quick if you find them. These lil guys are not the same as "millions" live bearing species, they're so small they drop one baby at a time...sometime two, so you don't have worry of overpopulating. Thanks for a great nano list ❣
In my country people love to have neon tetras and harlequin raspboras
Acabo de comprar las rasbora mosquito. Increíble su tamaño y color. Perfectos!
Chili rasboras my all time fav!
Excellent presentation
My favorite is the oto. They’re great when you have a school of them
Mooie video Mark, leuke soorten en goed beproken, ga zo door!
I thought all corydoras like to hang on the bottom. Happy to learn I was wrong. Now I'm thinking someone should create an aquarium (a bigger one) dedicated to the different types of corydoras.
My corydoras is about 6cm long though..
Haha, now MD Fish Tanks has created a cory tank!
@@m.935 I suppose it's not the same species as shown on this video then?
Hi .. very nice video... Scarlet budis is really a bright coloured fish... Is that same of blue badis ? Will they eat shrimps in the tank?
Wow best list I've seen
C. habrosus is actually smaller than pygmaeus unless you get a random big girl. And Poecilia wingei is not a guppy, but an Endler. Poecilia reticulata is a guppy. Your video shows hybrids of two species, so the reticulata species should be listed. Glad to see you included the green neon tetras. (they only look blue because of your lighting). Other than this, your list is similar to my own for the most part. And your tanks are immaculately scaped of course. Lovely.
Do pygmy cory stir up the soil in a planted tank? Bcuz 1 tank that has 4x pygmy is just a little cloudy. I change floss every 2-3wks. Upgraded to canister eheim. Tried clarity by seachem. But still not as clear as my other tank that has sand and gravel? Using organic soil with some black sand cap a thin layer only.
In my next scape I'm planning to put a school of Ember tétras. I like a lot that 🍊 color. I also have Rasboras mosquitos and Galaxy.
Great Video video, I wanna get some Danios to 👍🏽
You should!
What do you think about platinum ricefish?
Pygmy corys, chili raspboras, dwarf pea puffers, Neolamprologus multifaciatus, hillstream loach.
Hello! Like your video a lot, omg your tanks are just heaven in clear water 💙
I'm quite fond of nano fish myself; Could you advice me on how to enhance their colors? I have blue eyed pseudomugil and mine aren't as bright as what you show. Is there any food or water setting that might help? Many thanks and congrats for your wonderful work
Wow. Came to RUclips just after googling this question.
Resbora chili is my favourite 😋
Great video
I have a wonderful population of groups of at least 10 of white cloud mountain minnows, Zebra Danios, Checkered Barbs, rosy barbs, hillstream loaches, Amano shrimps, bladder and assasin snails.Works very well.
Now I look forward to put my betta and his kuhli loach mates, Caridina shrimp, bladder and assasin snails into a 71 litre tank and to add otocynclus, amber and neon tetras.I love nano fish.It makes me said that people treat them like they treat birds= the smaller the bird the smaller the cage and the smaller the fish the smaller the tank.
The moment I have put my cold water population into a 4 feet river like tank their behavior changed and I could see their happiness and their explored and using the full length of the tank to swim around and enjoy the wave machine current.
很棒的视频 包含了许多我没见过的鱼 😊
Beautiful video... Do endler guppy breed in planted tanks abundantly like normal guppy?
ive got the tiger endlers and pygmy corys
i thinking of getting dwarf chain loach
its a 38ltr tank
Nice nano fish 👍🏻
Perfect bro ✌️❤️
Which fish you recommend for surface on a mainly amazon aquarium, with low PH high temperature.
I was thinking about brown pencilfish but even tho they are small, they are kinda long, 4-6 cm. Wanna go with Pigmy Corys and Green Neon Tetras and Otto.