Here’s something you dont see everyday! A Wasp Fish! Do not touch these because they may sting (but, who’s really handling their fish?) Just be careful while netting your fish and moving to aquarium. This is a fairly small fish with beautiful fins and one that should be kept with others as they are happier in larger groups or colonies. Butterfly Gobies or Wasp Fish fall into the same category as the freshwater lionfish since they are obviously not flying butterflies and they’re not gobies either actually. They are wasp fish. They are popular for the big paddle-type fins.