Viewer question: Will my male Betta fish get along well with other fish? The answer is no. Females are better for schooling.
Fish, including Bettas when stressed (not what YOU think is stressful but what is stressful to them)... produce/release stress hormones. Putting two males in a tank - or in the ones with dividers which create huge fighting responses (stress meaning the are constantly releasing adrenal/cortisol interior and the other exterior) (which say to other fish - stay away from me)...and eventually this as the toxins they are, poison them interior, weakening their immune system, and the water as well.
Hi Kayley: The problem with two female Betta is that one may harass the other to the point of illness or death. When there are four or more a pecking order is established and one fish doesn't get the brunt of the aggression.
i have my betta in a 20high with several other fish.
To find out more on keeping bettas with other fish read this
To many, Betta's are seen as solitary fish. While in their natural habitat, they do no generally reside with other fish, this does not mean that they cannot reside with other fish. There is one rule of thumb, however, that is unavoidable. Two male Betta fish cannot be kept in a tank or bowl together. They are also referred to as Siamese Fighting Fish, and this is for a reason. Betta fish are very territorial, particularly when it comes to other male Betta's. Putting two male Betta's is a recipe for disaster, as there is a good chance that one will not survive. Although many believe that bettas can only be housed by themselves because they'll "kill" anything alive in the tank, bettas CAN be housed with other fish/invertebrae. In fact, there are quite a few species that can successfully coexist with a betta. The general rule is that a betta can live with anything as long as it's Myth: Male bettas only fight with other males; this aside, they are peaceful community fish. Reality: Most male bettas will fight with anything that even remotely resembles another male in finnage or coloration. Some will attack any fish indiscriminately, regardless of its appearance. It is inherently risky to house bettas with other fish. Some bettas are too aggressive to be kept with any species, and many community species will damage the finnage of a betta. This species does best when kept solitarily due to its special environmental and social needs. However, community keeping is possible with careful monitoring and appropriate tankmates if the betta's personality permits. Communal housing should always be approached on a case by case, individual basis! Brightly colored tropical fish are also recommended as fish to avoid pairing with Betta's, as color can makethem aggressive, as well as cause them to confuse the tropical fish for another Betta. In particular, Angel Fishshould not be put with Betta fish, as they have long and filmy fins that very much resemble male Betta fish. Thisleaves the Angel Fish very prone to attack and death by the Betta.