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Each spawning-age female can release up to 15,000 eggs at once. Snakeheads can mate as often as five times a year. This means in just two years, a single female can release up to 150,000 eggs." [7] "Since 2002, it has been illegal to possess a live snakehead in many U.S. states, where they are considered a destructive invasive species."
Male seahorses have a specialized ventral brood pouch to carry the embryos, male sea dragons attach the eggs to their tails, and male pipefish may do either, depending on their species. [4] The most fundamental difference between the different lineages of the family Syngnathidae is the location of male brood pouch. [ 5 ]
Capture (blue) and aquaculture (green) production of Striped snakehead (Channa striata) in thousand tonnes from 1950 to 2022, as reported by the FAO [6]Channa striata, the striped snakehead, is a species of snakehead fish.
Courtship between male and female pipefish involves lengthy and complicated shows of display. For example, in Syngnathus typhle, copulation is always preceded by a ritualized dance by both sexes. The dance involves very conspicuous wriggling and shaking motions, especially in comparison to the species' otherwise extremely secretive lifestyle.
Head of a northern snakehead. The distinguishing features of a northern snakehead include a long dorsal fin with 49–50 rays, [6] an anal fin with 31–32 rays, a small, anteriorly depressed head, the eyes above the middle part of the upper jaw, a large mouth extending well beyond the eye, and villiform teeth in bands, with large canines on the lower jaw and palatines.
When a female dies a juvenile (male) anemone fish moves in, and "the resident male then turns into a female and reproductive advantages of the large female–small male combination continue". [22] In other fishes sex changes are reversible. For example, if some gobies are grouped by sex (male or female), some will switch sex. [14]: 164 [21]
Observations and stomach analyses show that adult males consume fish, whereas adult females mainly consume other squamates, in particularly snakes. In this same research, it was concluded that the prey size increased with the size of the snake for both juvenile and adults, both male and female. [50]
All snakeheads are highly predatory, and the diets of the various species of Channa include fish, amphibians (like frogs), snakes, rodents, birds, and invertebrates (insects and crustaceans). [1] They have a labyrinth organ , which allows them to breathe air for short periods, and they use this adaptation to travel across land in the event that ...