Betta fish have a fiery temperament just like their name. They are aggressive. When they see others of the same kind, it will definitely trigger their fighting spirit. The dorsal fin and caudal fin are opened to the maximum angle, and this is also the most gorgeous moment people see. There are many different kinds of betta fish. According to different varieties, they can be divided into: fan-tailed betta and Siamese fighting fish, crown-tailed betta, round-tailed betta, blue betta splendens and red betta splendens.
Variety 1: Fan-tailed betta and Siamese fighting fish. They live in Thailand in Southeast Asia. The male fish is highly combative with the same species. They will fight fiercely for occupying territory and competing for female fish. Sometimes it may even lead to death. The wild variety is a small active fish in rice fields and small ponds, with red or green colors.
Characteristics of female fish: The end edge of the pelvic fin is different from that of the male fish. The end edge of the pelvic fin of the female fish will also drag a thin one (if it hasn't been bitten off...).
There is a yellowish-white genital pore between the pelvic fin and anal fin of the female fish.
The fins of the female fish are all short and cannot be elongated like those of the male fish. The belly of the female fish is slightly swollen.
Variety 2: Crown-tailed betta.
There is a yellowish-white genital pore between the pelvic fin and anal fin of the female fish.
The fins of the female fish are all short and cannot be elongated like those of the male fish. The belly of the female fish is slightly swollen.
Variety 3: Round-tailed betta.
Round-tailed betta is commonly known as betta fish, black wife, iron fish, black wife, moon fish, etc. Their bodies are laterally compressed and oval in shape, with convex backs and abdomens, slightly curved. The head is laterally compressed. The eyes are large and round, located laterally and superiorly. The anterior margin of the infraorbital bone is free anteriorly, with weak serrations, and covered by skin posteriorly. The interorbital space is wide and slightly convex. The anterior nostril is near the edge of the upper lip.
Characteristics of female fish: The end edge of the pelvic fin is different from that of the male fish. The end edge of the pelvic fin of the female fish will also drag a thin one (if it hasn't been bitten off).
There is a yellowish-white genital pore between the pelvic fin and anal fin of the female fish.
The belly of the female fish is slightly swollen.
The color of the female fish is less vivid (not very reliable).
Variety 4: Blue betta splendens (adult fish) and red betta splendens (adult fish).
The operculum of the male fish has obvious blue spots. The spots on the operculum of the female fish are less obvious. (It can be distinguished only by comparing many individuals). The male red betta splendens has vivid colors.