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rear nostril in top lip/mouthcenter nape - usually a poregill pouch expanded, supported by raysLL: all body, 2 sides connected over head
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rear nostril at eye levelD, A & C continuouslip flanges both jawswith pectoralsLL all body
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tiny, skin-covered eyesD & A join Cno pectoral
gill opening lowno LL, no head pores -
extremely elongate
eye smallD & A at rear, join Ctiny pectoralLL complete
only head pores - lower jaw -
rear nostril before center large eyelarge D & A join Croof mouth: central row large teethlarge gill opening
large pectoralLL complete