Development of early stages of pelagic armorhead pseudopentaceros wheeleri with notes on juvenile ps. Richardsoni and larval histiopterus typus (pisces, percoidei, pentacerotidae)

摘要

Two larvae (4.2 and 7.2 mm notochord length (NL)) and 28 juveniles (8.3-15.3 mm standard length (SL)) of the pelagic armorhead, Pseudopentaceros wheeleri, are described from surface tows taken near seamounts in the central North Pacific Ocean (29.5-30.5° N, 178-180°E) during February 1985. Diagnostic features of the larvae include dark Pigment on all but the posterior 9-20/100 of the body, a thick, long intestine (preanal length 76.4-76.9/100 NL), a supraoccipital crest, spiny supraorbital ridges, and preopercular spines.