it's scared of it's surroundings
crown tail bettas.
There are half moon betta, delta betta, round tail betta, long tailed betta, crown tailed betta, king betta, and others I don't know of yet.
A crowntail is a beta fish with a teardrop-shaped fan tail. The tail of a crowntail beta distinguishes it from other betas. The crowntail is a Siamese fighting fish that grows to 1.5-inches in length.
Bettas can be kept safely in a gallon or more, depending on how active he/she is. If you want your betta to be really happy, get a 5+ gallon tank. Any size gravel/rocks will work, and my betta seems to like the plants I added. Remember, bettas like roomy habitats.
There are currently 28 recognised Betta species.
with anything really
Some common types of betta fish include crowntail, halfmoon, plakat, and double tail. These types vary in fin shape, coloration, and tail appearance. Each type has its own unique characteristics that make them popular among betta fish enthusiasts.
You put them together when the female is full of eggs, and when the male builds a bubble nest.
It means they are getting ready to MATE
A Crowntail Betta Splendens is a variant of Splendens that has parted fins in a way that makes them look appealing. it is simply something you must look up on google images to get the right answer Fightn' Fact: There isn't only one Betta. Betta is an entire Genus of fish that qualify for certain specimens of fish. The fish you are talking about is betta splendens
Betta fish grow to be an average of 2 inches from head to the beginning of the tail.
Please describe the growth and where abouts it is on the tail. REAL ANSWER-It is ok if they have it, it is not bad, they are just growing. My betta fish has this.-Mii Bunny UPDATE* Is it fallling off?then it's tail rott.-Mii Bunny