can siamese fighting fish jumpAlthough males bettas are solitary and aggressive against one an alternate, they are able to generally cohabit with many types of fish and invertebrates if there’s adequate space and hiding places. However, compatibility varies in response to the temperament of the individual betta, and it is recommended to cautiously supervise the betta’s interaction with other fish. Tankmates must be tropical, communal, nonterritorial, and not have a similar body type or long flowing fins; coldwater fish like goldfish have incompatible temperature necessities, while competitive and predatory fish are more likely to nip at the betta’s fins or erode their slime coat. Species that shoal, akin to tetras and danios, are regarded most ideal, since they usually keep to themselves and may endure the territorial nature of bettas with their numbers. Brightly colored fish with large fins, equivalent to male guppies, may be avoided, as they may invite fin nipping by the male betta. Potential tankmates should customarily be added before the male betta so they can establish their respective territories ahead, rather than compete with the betta.