No.
no it is actually good for them
it doesnt depend on gender, they are not poisonous to anything, go ahead and have sushi
NOOOOOoooooo. The oscar would eat the betta fish almost instantly.
only if you've been feeding them poison.
prey
BB pellets are not digestible and will create a blockage in the fish resulting in death. The size and the shape of most BB's closely resemble the prepared betta pellets and so could be consumed by accident.
fish or things in the water like sharks,bigger fish stung by eels or by poisonous jellyfish.
Bream are eaten all over the southern part of the United States.
Algae Eaters, 'Mickey Mouse' fish, Platies, Cories, Tetras (Not Neon Tetras though, they will be eaten) Hope that helps!!
No betta fish are carnivores.
other Betta fish and the bigger fish.