Aw Dolphin you're no fun...if I give more clues then someone will guess correctly and I won't get to discover all these new Killifish that I've had to look up
...but sorry dolphin I'm not Aphyosemion bitaeniatum.
Sorry Jamnog...not Aplocheilinae or Diapterons (they are Killifish)
edit: I'm learning quite a bit about Killifish from this game I have found an excellent site on Africian Killifish and will post it at the conclusion of this game for anyone who is interrested.