i'll second elassoma if you don't mind the live food requirement. similarly, any of the west african killifish of the aphosemian type (vs nothos) would be very comfortable in that set up, as would the american rivulus type killies. all these need live food (although i'm sure the gardneri morphs would take to flake food, of these the 'misaje', 'jos plateau' and 'P82' are all eye-poppingly colorful).
the nomenclature on the killies just went through a second huge revision in the last decade or so. i'm still not fully brushed up on all the new names, but these old names will get you off to a good start on a search engine.
and lest anyone cry "fish cruelty", know that the word killifish comes from the dutch "puddle fish". many spend their entire lives in a couple of inches of water in seasonal mud puddles. the american rivulus adapted to the overcrowded conditions of puddles on the rainforest floor by spending a lot of time on land. they "sun" on sticks or leaves above the surface, and will climb the glass of your tank to go for a 'walk about', so a good tight fitting lid is essential. at least one species of rivulus can spend a whole month out of the water as long as they don't dry out (scientists kept them on moist sphagnum moss). the elassoma are not killies, but very much puddle fish from florida, and can take huge temperature swings, as well as the instability of small bodies of water.
Last edited by mack23; 10-30-2012 at 05:36 AM.
Reason: i caint spel