procurrent ray
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procurrent spur — a ventrally projecting spur on the posteriormost ventral procurrent caudal ray overlapping ventrally the preceding ray in various percomorphs (Johnson, 1975) … Dictionary of ichthyology
foreshortened preceding ray — in some acanthopterygians, a condition where the base of the ventral procurrent ray immediately anterior to the posteriormost ventral procurrent ray is shortened and and overlaps less with the haemal spine or other supporting bones than do its… … Dictionary of ichthyology
accessory caudal ray — one of a series of short, procurrent rays on the upper and lower margins of the of the caudal peduncle … Dictionary of ichthyology
caudal fin ray count — usually only the principal or main rays are counted, the tiny rudimentary, often procurrent rays are not included. In fishes with branched rays, the principal count is the number of branched rays plus two. These rays are usually markedly larger… … Dictionary of ichthyology
