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Stocking advice for 20G tall?

2329 Views 13 Replies 6 Participants Last post by  Scdeqqer
I have a 20 gal tall with one dwarf gourami and 2 dwarf crayfish. I am hoping to get 10 cardinal tetra when my lfs gets them in again but I was wondering if I could do 2-4 of another type fish as well.
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Great setup! I'd do a trio of platies, swordtails or sailfin mollies. Or, a small school of cories or pencil fish.
Great setup! I'd do a trio of platies, swordtails or sailfin mollies. Or, a small school of cories or pencil fish.
Great setup! I'd do a trio of platies, swordtails or sailfin mollies. Or, a small school of cories or pencil fish.
Hey thanks!
Great setup! I'd do a trio of platies, swordtails or sailfin mollies. Or, a small school of cories or pencil fish.
Hey thanks! I was hoping for something like corys to help clean the tank. I was thinking peppered corys since they seem to be on the smaller side. Do you think 2 or 3 would be enough?
Cories and Crays don't mix. Even with hiding spaces. You'd want to stick with something that inhabits the upper half of the tank.

I've had Dwarf Crays kill Plecos that were much larger than them. Same with Cories. Have even had them catch Endlers and larger fish on occasion. But fish that don't spend much time near the bottom always fare the best.
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That's a gorgeous tank! Some corydoras would do well as a cleanup crew, but they like to be in groups of 6 or more, and crayfish and corydoras apparently are not a good match. I am not sure there are any clean-up crews that can go with crayfish (you could go with a handful of cheap ghost shrimp, but you would likely need to keep replenishing them). A school of cardinal tetras would look really good in your tank, and 10 is a good number for your tank (you could go with a few more if you want), though they tend to be mid-bottom swimmers so a couple might get snagged by the crayfish. With that layout, you would have top dwellers, mid-bottom dwellers, and bottom dwellers so that would be enough, and I think they would look great in your tank!
Larger snails, along with Ramshorn, Pond and Bladder, would work well in a setup like that. Cray would pick off a few of the tiny ones but that's probably not going to be much of a problem.

Could even consider adding some Malaysian Trumpet Snails, as they're nocturnal and live beneath the substrate most of the time.
Tank is too small for swordtails. Personally i would go with consider pencil fishes or green neon over cardinals; also you might look into a pair of opal borelli. The borelli are really quite nice and durable. The reason for the suggestion of the green neon over cardinal is a size thing. You could go with 15 green neon but cardinals while not huge are not tiny and the 20 high really limits space at 24 inches wide. I have a few swordtails in my 29 and i consider that tank borderline for them. They are not small fishes.
look into a pair of opal borelli
Apistogramma borellii 'Opal' are awesome. They can hold their own against Crays to the point that I'd be more worried about keeping the Cray safe - heh.

Not sure there are many other freshwater fish with such cool-looking faces. They'd be awesome in a tank like this.
Cories and Crays don't mix. Even with hiding spaces. You'd want to stick with something that inhabits the upper half of the tank.

I've had Dwarf Crays kill Plecos that were much larger than them. Same with Cories. Have even had them catch Endlers and larger fish on occasion. But fish that don't spend much time near the bottom always fare the best.
Cories and Crays don't mix. Even with hiding spaces. You'd want to stick with something that inhabits the upper half of the tank.

I've had Dwarf Crays kill Plecos that were much larger than them. Same with Cories. Have even had them catch Endlers and larger fish on occasion. But fish that don't spend much time near the bottom always fare the best.
Soo I hadn't read this yet and got 3 venezuelan corys I just took the crayfish out and am going to return them and get a 4th cory. Thanks for the input I didn't even think about both being bottom dwellers and don't want to take the chance when the corys sleep.

Tank is too small for swordtails. Personally i would go with consider pencil fishes or green neon over cardinals; also you might look into a pair of opal borelli. The borelli are really quite nice and durable. The reason for the suggestion of the green neon over cardinal is a size thing. You could go with 15 green neon but cardinals while not huge are not tiny and the 20 high really limits space at 24 inches wide. I have a few swordtails in my 29 and i consider that tank borderline for them. They are not small fishes.
Thank you for the suggestions. I got mixed up thinking cardinals were the smallest tetra. My lfs has neon and ember but no green or opal borelli and I like to keep to what they have. I ended up getting 3 venezuelan corys and took the crayfish out. Returning them tomorrow and getting a 4th cory.

What about 10 neon tetras and 4-6 rice fish?
Tank is too small for swordtails. Personally i would go with consider pencil fishes or green neon over cardinals; also you might look into a pair of opal borelli. The borelli are really quite nice and durable. The reason for the suggestion of the green neon over cardinal is a size thing. You could go with 15 green neon but cardinals while not huge are not tiny and the 20 high really limits space at 24 inches wide. I have a few swordtails in my 29 and i consider that tank borderline for them. They are not small fishes.
a thought.....green tetras would look amazing in that tank...but my greens hang very low in the tank and hide much in the foliage....they too may end up being crayfish food...
Thank you for the suggestions. I got mixed up thinking cardinals were the smallest tetra. My lfs has neon and ember but no green or opal borelli and I like to keep to what they have. I ended up getting 3 venezuelan corys and took the crayfish out. Returning them tomorrow and getting a 4th cory.

What about 10 neon tetras and 4-6 rice fish?
10 neon are fine. Most pet shop sell tank raised neon that are not super hardy but give them a shot. Also ember are a nice tetra and you could get 6 of each if you wanted. The tank is really too small for larger cory like venezuelan. pygmy cory would work fine. Having said that if you already have 4 cory and soft substrate it isn't the end of the day.
Apistogramma borellii 'Opal' are awesome. They can hold their own against Crays to the point that I'd be more worried about keeping the Cray safe - heh.

Not sure there are many other freshwater fish with such cool-looking faces. They'd be awesome in a tank like this.
They do look really frickin cool but my lfs doesn't have them and they are a
10 neon are fine. Most pet shop sell tank raised neon that are not super hardy but give them a shot. Also ember are a nice tetra and you could get 6 of each if you wanted. The tank is really too small for larger cory like venezuelan. pygmy cory would work fine. Having said that if you already have 4 cory and soft substrate it isn't the end of the day.
I have a 20 long cycling so if the corys get to big for this one I'll be able to move them out. Never had em before so I thought I try em out cause everybody loves em and so far they are kinda schooling with the dwarf gourami lol. I replaced the crayfish with two amanos. My lfs is a family owned shop that has hundreds of driftwood, over 10 species of corys, a whole room for cichlids and a couple $1000 plecos. I'm lucky to have such a wonderful shop in town. As always thanks for the advice it has really helped out!
What town are you in? Sounds like a decent shop. They might have an alternative to the borelli if they have a lot of dwarf cichlid. You want something robust so avoid german blue rams; and small. nannacara are not as flashy but still a nice fish. Avoid cockatoo (a common and popular dwarf cichlid).

They do look really frickin cool but my lfs doesn't have them and they are a

I have a 20 long cycling so if the corys get to big for this one I'll be able to move them out. Never had em before so I thought I try em out cause everybody loves em and so far they are kinda schooling with the dwarf gourami lol. I replaced the crayfish with two amanos. My lfs is a family owned shop that has hundreds of driftwood, over 10 species of corys, a whole room for cichlids and a couple $1000 plecos. I'm lucky to have such a wonderful shop in town. As always thanks for the advice it has really helped out!
What town are you in? Sounds like a decent shop. They might have an alternative to the borelli if they have a lot of dwarf cichlid. You want something robust so avoid german blue rams; and small. nannacara are not as flashy but still a nice fish. Avoid cockatoo (a common and popular dwarf cichlid).
Bloomington IL. It's a great shop. They have some awesome jack Dempseys, which I adore. Not looking for cichlids or any big or expensive fish at the moment. That has to wait until I get a bigger place. They can order anything I want though. I asked about green tetras and they said they could order them but it was like $8 a fish. They have a tank of over 60 green tiger barbs which stole my heart and I'll Def be doing once I get a big boy tank.
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