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Springer's sawtail catshark
The Springer's sawtail catshark (''Galeus springeri'') is a little-known species of catshark, belonging to the family Scyliorhinidae, found in waters deep off the islands of the Antilles, from Cuba to the Leewards. A small, slim-bodied species reaching a length of , the Springer's sawtail catshark can be identified by its color pattern of horizontal dark stripes in front of the first dorsal fin, and dark dorsal saddles behind. It is additionally characterized by the presence of saw-toothed crests, made of enlarged dermal denticles along both the dorsal and the ventral edges of the caudal fin. The Springer's sawtail catshark is oviparous. The International Union for Conservation of Nature (IUCN) presently lacks the information to assess its conservation status.
==Taxonomy==
The Springer's sawtail catshark was originally regarded as the striped color morph of the Antilles catshark (''G. antillensis'', formerly ''G. arae antillensis''). The first known specimen had resided in the National Museum of Natural History for over 20 years, until an artifact of preservation revealed the distinctive ventral dermal denticle crest on the caudal fin. The species was described in a 1998 issue of the scientific journal ''Copeia'' by Hera Konstantinou and Joseph Cozzi, who named it after leading shark taxonomist Stewart Springer. The type specimen is a long immature male collected on December 8, 1969 near the Leeward Islands. This shark belongs to the ''G. arae'' species complex, which also includes ''G. antillensis'', ''G. arae'', ''G. cadenati'', and ''G. mincaronei''.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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