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Siamese fighting fish are popular models for studying the neurological and physiological impact of certain chemicals, such as hormones, since their aggression is the result of cell signalling and possibly genes. [62] One study investigated the effect of testosterone on female Siamese fighting fish. Females were given testosterone, which ...
Siamese fighting fish (B. splendens) are frequently sold in the United States simply as "bettas". As of 2017, around 73 species are classified within the genus Betta. [1] A useful distinction is that, while the generic name Betta is italicized and capitalized, when used as a common name it is usually neither italicized nor capitalized. [5]
To mix the black-and-white footage of Rusty James and the Motorcycle Boy in the pet store looking at the Siamese fighting fish in color, Burum shot the actors in black and white and then projected that footage on a rear projection screen. They put the fish tank in front of it with the tropical fish and shot it all with color film. [13]
Many members are common aquarium fish; by far the most famous is the Siamese fighting fish, Betta splendens (note that the domesticated form is very likely a hybrid). Most (not all) of the 70+ betta species are paternal mouthbrooders; the remaining members of the subfamily are bubblenesters like most osphronemids.
Bubble nests created by male Siamese fighting fish (Betta splendens) are made from air bubbles coated with saliva to increase durability. The creation of the bubbles is audible and often frantic. Bubble nests and breeding
Siamese fighting fish (sometimes Betta, esp. US) Betta splendens: 7.5 cm (3.0 in) Betta is the name of the genus that includes more than 60 species other than the Siamese fighting fish. 5 gal [62] 72–82 °F (22–28 °C) [62] 6.5-7.5 [62] Emerald betta: Betta smaragdina: 7 cm (2.8 in) Spotfin betta: Betta macrostoma: 10 cm (3.9 in) Frail ...
The margins of the dorsal, anal and caudal fins are dark and the outer edge of each lobe of the caudal fin is white. Juvenile fish are blue above and silvery below. [3] The maximum recorded total length of the halfmoon is 48 centimetres (19 in). [2] The shape of the caudal fin is said to resemble a crescent moon, leading to the common name. [4]
In September 2016, the International Union for Conservation of Nature (IUCN) listed 1245 vulnerable fish species. [1] Of all evaluated fish species, 8.1% are listed as vulnerable. The IUCN also lists eight fish subspecies as vulnerable. Of the subpopulations of fishes evaluated by the IUCN, 18 species subpopulations have been assessed as ...