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Lepidophagy, or scale-eating, has been reported in a range of fish, including: Chanda nama (family Ambassidae), [4] Plagiotremus (family Blenniidae), [5] Terapon jarbua (family Terapontidae), [1] a few Ariopsis and Neoarius species (family Ariidae), [6] Pachypterus khavalchor (family Pachypteridae), Macrorhamphoides uradoi (family Triacanthodidae), several pencil catfish (family ...
The melanophores also cover the big scales, but these detach easily, and any predator that gets close enough, may end up with a mouthful of scales. Altogether, the absorption of light is 99.5% efficient, a fact that makes photographing this fish in its natural habitat very difficult. [7]
Populations of large predatory fish in the global oceans were estimated to be about 10% of their pre-industrial levels by 2003, [1] and they are most at risk of extinction; there was a disproportionate level of large predatory fish extinctions during the Cretaceous–Paleogene extinction event 66 million years ago. [2]
Piranhas will often scavenge, [9] and some species such as Serrasalmus elongatus are specialized scale-eaters, feeding primarily on scales and fins of other fish. [3] Scale- and fin-eating is more widespread among juvenile and sub-adult piranhas. [20] Piranhas lay their eggs in pits dug during the breeding season and swim around to protect them.
Once a predator swallowed an eel, the sated fish was quickly moved to a special tank where the X-ray video camera was ready to roll. “Due to the very narrow field of view of the X-ray video ...
The eating of scales and the skin surrounding the scales provides protein rich nutrients that may not be available elsewhere in the niche. [71] Fish jaws normally show bilateral symmetry. An exception occurs with the scale-eating cichlid Perissodus microlepis. The jaws of this fish occur in two distinct morphological forms. One morph has its ...
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Mimicry of mutualistic species is seen in coral reef fish, where the models, certain cleaner fish, are greatly disadvantaged by the presence of the mimic. Cleaner fish are mutually beneficial to many other species, which allows them to eat their parasites and dead skin. Some allow the cleaner to venture inside their mouths and gill cavities to ...