Help Me Please ...Fish Compatibility - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 6 Old 05-05-2010, 11:18 AM Thread Starter
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Help Me Please ...Fish Compatibility

Hello ,
Can someone please give me a long list of fish that can go with mine in a 170 L tank.

I have :
2 orange platys
1 golden gourami
1 leopard ctenopoma ....

(Also could i add a ghost knife fish around the same size ?)
Please answer both of my questions -
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post #2 of 6 Old 05-05-2010, 01:01 PM
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Welcome to Tropical Fish Keeping.

First, what are your water parameters (pH and hardness)? The first key to compatible fish are fish that share reasonably identical water parameters, plus environmental things like plants, rocks, wood, caves, swimming and/or growing space, etc. Then comes the behaviour/temperament of the fish themselves.

You have a 170L/45g tank. The Ctenopoma acutirostre will attain 6-8 inches so it is fine in your aquarium. But although it is somewhat shy as a species, it is nevertheless a predator and will eat anything it can fit in its mouth. So tankmates need to be large enough. Gourami should be fine; Congo tetras are possible, though they are shoaling fish and need to be in a group, say 5 minimum, which would work with just the Leopard Bushfish and a bottom fish or two if small species (some grow to over a foot, not suitable). Or one of the medium-size barb species (also shoaling fish). Or a pair of African Butterfly fish (Pantodon buchholzi) for the surface. All of these fish prefer dim waters, so floating plants would be good.

Knifefish I would not recommend for a 45g. The black ghost knifefish from SA attains 20-24 inches and requires at least a 200g tank--one must recognize the potential and prepare for it if the fish is to be healthy and long-lived. If you had the space, this could be an interesting setup, a group of rather odd fish (Pantodon, Ctenopoma and one knifefish) but this needs a spacious tank. The knifefish is also predatory, and more demanding concerning water conditions (soft, acidic water and very stable to prevent disease).


Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #3 of 6 Old 05-05-2010, 01:39 PM
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Nothing to add as Byron has covered it all very nicely but wanted to say, "Welcome to TFK!"

If you don't stand up for something you'll fall for anything...
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post #4 of 6 Old 05-06-2010, 02:10 AM
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Thanks :D
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post #5 of 6 Old 05-06-2010, 04:32 AM
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Welcome to TFK!

Do you plan on your your platies being long-term residents of your tank? I asked because your (presumably) juvenile leopard ctenopoma is probably looking at them as hot dogs with fins that he will one day devour with glee. I would keep an eye on the gourami, too, but for a different reason; these two fish are fairly closely related and anabantids are notoriously territorial so I could imagine the gourami deciding he doesn't much like the bush fish. They might get along just fine, though, but it's something to be on the lookout for.

What about some fish for the bottom of the tank? Some type of river synodontis might make a good addition (nothing too big nor too small, though). If the dimensions of your tank will allow it, you could try an African brown knife fish. These grow much smaller than the bigger black ghost knife and would probably get along with the similarly shy, ambush-predator nature of the ctenopoma.

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post #6 of 6 Old 05-06-2010, 08:51 PM
u want to get two rams to add to the tank hard fish to keep alive but worth it if you can keep it alive there so beautiful

65 gallon tank
1 oscar 7inch
1 firemouth 4inch
1 common pleco 6inch
1 long finned tiger oscar 3inch

45 gallon tank
2 rainbow tetra 3inch
2 skirt tetra 2inch
1 blue ram 2 inch
1 clown pleco 2 inch

15 gallon tank
1 sailfin pleco 2 inch
1 electric blue jd 2 half inch
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