The Marine Betta is a beautifully colored fish with large fins, which are a continuation of their body color and give a rounded appearance. These fish are very dark with many white spots covering their body. They also have a "false eye" in the upper rearbody. Marine Bettas are not aggressive towards other fish of the same relative size. Great for fish-only or aggressive tanks. They should not be kept with shrimp that they will mistake for food. They are great for fish-only tanks.This fish is part of the Devilfish family. These fish have a long single dorsal fin and elongated ventral fins.