The Plakat is a short-finned version of the common Betta. They are usually more active then long-finned Betta’s, properly because they don’t have the long elaborate fins to slow them down. Also, they are known to have more resistance to disease, which makes them favorable to many Betta owners.
Because they were bred for fighting their temperament may be more aggressive than the long finned variety and consideration to tank mates should be given when preparing a home for these fish. It’s important to note that while betta fighting is common in the Thai culture these fish are protected under animal fighting statutes in many countries.
The nature of the Betta is calm, protective, and residential. They become aggressive only to protect their own territory. This is the reason Bettas must be kept separate from other fish. Bettas will react quite aggressively if any fish enter their territory; they will flare their gills and spread their fins to scare the other Betta off (except the female of course). Bettas are kept in limited spaces, so the exercise courses are essential to any serious breeder.