There are some fish that have evolved to live in groups (shoals/schools)and so are uncomfortable by themselves. There are others that have evolved to be on their own most of the time but all fish need mates in order to breed successfully.
Fantail fish usually have four mates.
they are fish that are active with their mates.
About 30
To enjoy outdoors and to have fun with a couple of mates.
Trigger fish could easily eat a clown fish without the protection of an anemone. Even with some protection an owner would need to insure the trigger is fed regularly to prevent injury to tank mates. Sea horses, while probably not particularly edible, are difficult to keep and may not be compatilble with agressive tank mates.
They are OK with most Livebearers, Barbs and Tetras.
the yellowfin mates all year round....
Yes platys will be fine they don't really need a hiding place.They might do if they feel under threat by bigger tank mates.
It is an adaptation that they have developed to defeat other siamese fighting fish for mates and/or territory.
Some compatible tank mates for a snail betta fish include peaceful fish like neon tetras, ghost shrimp, and Corydoras catfish. Avoid aggressive or fin-nipping fish to ensure a harmonious tank environment.
a range to 50 to 1000
Some compatible tank mates for betta fish, like tetras, include peaceful community fish such as neon tetras, harlequin rasboras, and corydoras catfish. It's important to choose fish that are not aggressive and can thrive in similar water conditions as bettas.