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The humphead wrasse is considered an umbrella species, which means many other species are sympatric with it and have much smaller ranges—thus the conservation of the humphead wrasse's habitat would benefit these other species as well. Understanding the concept of an umbrella species can lead to a better understanding of endangered species ...
Humphead wrasse (Cheilinus undulatus) is a species of bony fish, the largest species of wrasse mainly found on coral reefs in the Indo-Pacific region. It has a prominent hump on top of its head. It is believed the hump is a signal to females how genetically healthy a male is in a similar to a lion's mane or a buck's antlers.
[21] [22] [23] In a 2024 study, "mirror-naive" bluestreak cleaner wrasse were reported to initially show aggression to wrasse photographs sized 10% larger or 10% smaller than themselves, regardless of size. However, upon viewing their reflections in a mirror, they avoided confronting photographs 10% larger than they were. [24]
The Asian sheephead wrasse, as the common name indicates, is a wrasse, and thus is in the family Labridae.It has long been placed in the genus Semicossyphus, [2] [3] [4] but a recent paper suggested that it (along with its two congeners in Semicossyphus) be moved to Bodianus to make the latter monophyletic.
Moon wrasse, Thalassoma lunare, a protogynous animal species. Protogynous hermaphrodites are animals that are born female and at some point in their lifespan change sex to male. [27] Protogyny is a more common form of sequential hermaphroditism in fish, especially when compared to protandry. [28]
A male humpback whale has made an extraordinary journey from South America to Africa — traveling more than 13,046 kilometers (8,106 miles) — the longest migration recorded for a single whale ...
Blue-headed wrasse. Thalassoma bifasciatum, the bluehead, bluehead wrasse or blue-headed wrasse, is a species of marine ray-finned fish, a wrasse from the family Labridae. It is native to the coral reefs of the tropical waters of the western Atlantic Ocean. Individuals are small (less than 110 mm standard length) and rarely live longer than two ...
They do not have pharyngeal jaws. Generally jaws are articulated and oppose vertically, comprising an upper jaw and a lower jaw and can bear numerous ordered teeth . Cartilaginous fishes grow multiple sets (polyphyodont) and replace teeth as they wear by moving new teeth laterally from the medial jaw surface in a conveyor-belt fashion.