Marine Fishes of the Arctic Region - Volume II - C. W. Mecklenburg, A. Lynghammar, E. Johannesen, I. Byrkjedal, J. S. Christiansen, A. V.

731   ii   Marine  Fishes  of  the  Arctic  Region   IDENTIFICATION  GUIDE   Pages   of   fish   photographs   with   labeled   identification   However,   they   are   more   true   to   color   than   are   old,   characteristics   are   grouped   in   this   section   for   use   as   a   preserved  specimens  in  formalin  or  alcohol. [...]  112)   464   Family:  Rajidae  —  Skates   Amblyraja  hyperborea              Arc5c  skate   Eyes  far  apart   3  pairs  of  scapular  thorns,   2  or  4  pairs  uncommon   720  mm   dorsal   male   surface   ventral   surface   Ventral  surface  blotched   with  dark  gray  to  black   540  mm   dorsal   female   surface   ventral   surface   egg  case   Lateral  keels  end  abruptly   on  the. [...]   108  mm   lintea     470   Family:  Rajidae  —  Skates   Rajella  lintea              sailray   Dorsal  surface  uniformly   About  40  thornlets   grayish  brown   on  rostrum  (fewer   in  juveniles)   Median  thorns  39–52     from  nuchal  region   to  first  dorsal  fin   Well  defined  rows   of  medial  orbital   Dorsal  surface   thornlets   covered  with   prickles   90  cm   female   S. [...]   495   Family:  Lampridae  —Opahs   Lampris  gu+atus              opah   Pectoral  fins  long   and  sickle- ‐shaped,   Body  iridescent  blue  and   placed  high  on  body   red,  covered  with  silver   spots   Body  deep,   compressed,   Fins  bright  red   ovoid   496   Family:  Trachipteridae  —  Ribbonfishes   Trachipterus  arc-cus              dealfish   Greatest  body  depth  about   Silv. [...]  stelleri   (which  does  not  occur  in  study  area)   37  mm   66–74  mm   34  mm   34  mm   24  mm   544   Family:  Co+dae  —  Sculpins   Myoxocephalus  quadricornis              fourhorn  sculpin   Postocular  and   occipital   Dorsal  fins   protuberances   widely  spaced   Long,  slender   present,  with   caudal  peduncle   rough,  wartlike   surface  in  some   specimens   232  mm   femal.