yvez9 said:
direct from the TFF Fish index
Convict Porifle
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Convicts need water. That's about it. Hardiest fish you can throw at a tank IME. They're pretty much happy in any water conditions, as long as its not insanely high or low pH. Ideal temperature is around 80F (just over 26 celsius). Ideal pH is 6.8 to about 7.8 with 6.8-7.4 being best.... They can get pretty big so a 20Gal is a good minimum tank size with a 29G or more being ideal. You can keep a group of convicts in a larger tank, trying to maintain a higher number of females than males. An important thing to keep in mind is that if you take even mediocre care of them, they will breed. You can avoid this by keeping an eye out for eggs and vacuuming them up, or better yet, keep all females with out any males (easily distinguished by their orange or sometimes reddish orange patches on the stomach *not visible on small babies*)
*Gravel should be a dark color, and not too big, they enjoy digging and randomly piling gravel. Its a hobby of theirs... They can do it for hours. Ideally, just scape with large flat or rounded rocks and pieces of driftwood. They like having places to hide. If you can make several caves this will be helpful. Never make just one as the fish are likely to fight over it. Remember, convicts are agressive.
*Dont go nuts with the aquascaping, because if they want to move something, odds are they will. Plants aren't going to last long, especially if the convict wants to dig where the plant is. You can use plastic plants, but try to use ones that arent overly fragile, and anchor them into the gravel or ideally between large rocks so they cant be dug up.
*Ideal tankmates are pretty much nothing. Its about what can tolerate their aggression more than anything. You're best keeping them alone, honestly. You can add a couple of crawfish as bottomfeeders, which look cool and don't get messed around much by convicts, make sure you give the crawfish tiny caves only it can squeeze into, when it sheds, its squishy for a few days and can be eaten easily. FEED THE CRAWFISH!!!
Filtration should provide a fairly heavy current, as your crawfish and convicts will very much enjoy this. Also use something with a heavy filtration capacity, convicts can get up to 7" if taken good care of and eat a LOTTTT of food *you have nooo idea*
Ideal food for the craw AND convicts is the following:
HIKARI Cichlid Complete
HBH Veggie Flakes
HIKARI Frozen Bloodworm, Mysis Shrimp, and Krill *hard for baby cons to eat unless chopped*
HBH Veggie Wafers *Its more for the crawfish
Tetra Bottomin sinking tablets *Every other day. Has large quantities of calcium for your crawfish- keep in mind overfeeding it will buffer your water up, and eventually raise your pH a little so dont over do it.
If you're a really good samaritan set up a 10G to breed some guppies and toss the fry into the convict tank. Best food ever. Conversely, when the cons lay eggs, feed the eggs to the guppies. It all works out.