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./ -l WIDTHS l--/DEPTHS I-- LENGTHS FROM SNOUT -4DEPTHS ~WIDTHSi-- AS Anterior Margi n of Snout to: AE Anterior Margin of Eye (Snout Length) PE OPI Origin of Pectoral Fin (Head Length) OOF Origin of Dorsal Finfold OPAF Origin of Preanal Finfold 00 Origin of Dorsal Fin (Predorsa I Length) OP2 Origin of Pelvic FIn 00 (Prepe I vie Length) 10 Insertion of Dorsal Fin (10 minus 00 is Bare Length) PY Posterior Margin of Yol k PV Posterior Margin of Vent (Snout- to-Vent Length) OA Origin of Anal Fin (Preanal Length) IA Insertion of Anal Fin (IA ml nus OA I s Base Length) PHP Posterior Margin of Hypural BPV Plates or Notochord (Stand'rd Length) AFC Anterior Margin of Fork of Cauda I Fi n (Fork Length) PC Posterior Margin of Caudal Fin (Tota I Length) Fi~. 1. Measures and counts for larval and early juvenile fishes. Yolk-sac and pterygiophores are included in width and depth measures but fins and finfolds are not. "B" inBPE and BPV means immediately behind. i.e. not including the eye or vent, respec- tively. AMPM is the anterior margin of the most posterior myomere. Location of width and depth measures at 00 prior to 0 forma- tion is approximated to that of later larvae. Once the dorsal fin is formed, length to OOF is measured only as long as finfold remains anterior to it. PHP is measured to the end of the notochord until the adult complement of principal caudal rays are observed. For fish in which PV and OA approximate each other, OA is often deleted and assumed to be the same. Fin lengthS (0, A. Pl and P2 encircled) are measured along the plane of the fin from the origin to the most distal margin. Principal rays of the median fins are darkened and the number given in arabic while secondary rays are outlined and given in lower case Roman numerals; when counted, the rays of paired fins are not so divided. The first and last myomeres.as well as the last myomeres in counts to specific points of reference. are shaded. 3: fT1 -l :c o Cl VI U1