Very tough fish to find. They're more like polycentrus schomburgkii than anything else, and care is practically identical. Keep up on your water changes and you'll be fine (once to twice a week ~40%), keep the water very warm (82-84 is prime, and it keeps ich away as well). My old schomburgkii/abbreviata ate frozen brineshrimp, live earthworms, crickets, feeders, etc. Bloodworms were another favourite. I kept a pair of each in their own heavily planted 10gs with small peacock eels and buffalohead cichlids. They never had any problems other than the occassional territorial dispute with the buffalohead. A 29g can easily do a small group for life, they are very inactive fish. If you've ever kept them, their behaviour is very similar to ctenopoma acutirostre, except more sedentary and less easily frightened.