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Anchialine system. An anchialine system (/ ˈæŋkiəlaɪn /, from Greek ankhialos, "near the sea") is a landlocked body of water with a subterranean connection to the ocean. Depending on its formation, these systems can exist in one of two primary forms: pools or caves. The primary differentiating characteristics between pools and caves is the ...
Cavefish. Garra andruzzii showing the pale colour and lack of eyes typical of cavefish. 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.
The Mexican tetra (Astyanax mexicanus), also known as the blind cave fish, blind cave characin or the blind cave tetra, is a freshwater fish in the Characidae family (tetras and relatives) of the order Characiformes. [4][5] The type species of its genus, it is native to the Nearctic realm, originating in the lower Rio Grande, and the Neueces ...
Amblyopsidae. The Amblyopsidae are a fish family commonly referred to as cavefish, blindfish, or swampfish. They are small freshwater fish found in the dark environments of caves (underground lakes, pools, rivers and streams), springs and swamps in the eastern half of the United States. Like other troglobites, most amblyopsids exhibit ...
The Great Blue Hole, located near Ambergris Caye, Belize Dean's Blue Hole, Long Island, Bahamas Watling's Blue Hole, San Salvador Island, Bahamas. A blue hole is a large marine cavern or sinkhole, which is open to the surface and has developed in a bank or island composed of a carbonate bedrock (limestone or coral reef).
The blind cave eel (Ophisternon candidum) is a species of cavefish in the family Synbranchidae.It is the longest cavefish in Australia (up to 40 cm (16 in)) [2] and one of the only three vertebrates in Australia that is restricted to underground waters, the other being the blind gudgeon (Milyeringa veritas) and the Barrow cave gudgeon (Milyeringa justitia). [3]
N. pnar was first observed in the 1990s, and only collected and photographed for study in 2019. [2] However stories of 'white cavefish' within the Siju Caves in the Garo Hills of Meghalaya have been documented for a century and suggested to be slightly decolorized specimens of Neolissochilus hexastichus which appeared white when seen in water under torch light. [1]
Synbranchus infernalis (Hubbs, 1938) The blind swamp eel ( Ophisternon infernale) is a species of fish in the family Synbranchidae. It is endemic to Mexico where it lives in cave systems and is known in Spanish as the anguila ciega. The International Union for Conservation of Nature has rated this cavefish as "endangered".