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postanal

   Also found in: Dictionary/thesaurus 0.01 sec.
postanal /post·anal/ (pōst-a´n'l) behind or beyond the anus.


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Larvae of northern sculpin have 35-36 myomeres, pelvic fins with one spine and two rays, a bony preopercular shelf, four preopercular spines, 3-14 irregular postanal ventral melanophores, few, if any, melanophores ventrally on the gut, and in larger specimens, two rows of ctenoid scales directly beneath the dorsal fins extending onto the caudal peduncle.
Postanal ventral melanophores (pvm) became visible late during the embryonic development (day 51) along the ventral midline at 80% BL.
A row of postanal ventral melanophores (PVMs) extends from the anus to the caudal peduncle.
 
 
 
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