Blind Cave Fish
Cave shrimp and cave fish dontbecause they dont have eyes. 3 4 the type species of its genus it is native to the nearctic ecozone originating in the lower rio grande and the neueces and pecos rivers in texas as well as the central and eastern parts of mexico.
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Blind cave fish compensate for their lack of sight by having a more sensitive lateral line system which detects vibrations or changes in pressure in the water.
Blind cave fish. They are born with eyes as fry but the eyes degenerate and are reabsorbed back into the body at a few weeks old. The large red spot on the head is the blood filled gills visible through the semi transparent gill cover cavefish or cave fish is a generic term for fresh and brackish water fish adapted to life in caves and other underground habitats. As there name would indicate the blind cave tetras have no eyes.
Cave fishes are small growing to about 10 cm 4 inches long and are found in fresh water in dark limestone caves of the united states. One of the most interesting characin which is naturally blind is commonly called the blind cave fish thousands of years ago these fish were carried by currents into underground caves where little or no light existed. Blind shrimp would you see very well in a deep dark cave.
The mexican tetra astyanax mexicanus also known as the blind cave fish blind cave characin and blind cave tetra is a freshwater fish of the family characidae of the order characiformes. While the blind variant doesnt seem to be a schooling fish they do still tend to congregate in the water and do best when kept in groups of at least six. It is a canal system running just under the skin along each side of the fishs body.
Cave fish any of the pale blind cave dwelling fishes of the genera amblyopsis and typhlichthys family amblyopsidae. Fin nipping may take place accidentally during feeding when the tetras may mistake other fish for food especially if they are very slow moving. Energy saving eye loss or the expensive tissue hypothesis is one of a.
These fish are extremely rare only found in the dark recesses of caves. In the aquarium the blind cave tetra is usually a peaceful fish though it has been noticed to become more aggressive while aging. Blind cave tetras are a peaceful fish although they have been known to become more aggressive as they age.
Blind cave tetras are a relatively new tetra to the mainstream aquarium keepers. Phreatichthys andruzzii showing the pale colour and lack of eyes typical of cavefish. The lateral line is a specialized sensory organ found in fish.
The top predator in these sunless ecosystems is a tiny blind cavefish only a few inches long.
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