Abstract
Only one diagnostic sign is enough for differentiation of chub mackerel Scomber japonicus and blue mackerel S. australasicus working with mass material. It is a number of spines in dorsal fin: chub mackerel has 9-10 (often 9) and blue mackerel has 11-12 spines. Species identification may be done by relative distance between the spines: it is larger by half for chub mackerel. The species differ well by coloration of dorsal side: blue mackerel has «marbled» pattern with thin lines, in contrast to chub mackerel that has «zebra» pattern with thick lines.
Highlights
One diagnostic sign is enough for differentiation of chub mackerel Scomber japonicus and blue mackerel S. australasicus working with mass material
It is a number of spines in dorsal fin: chub mackerel has [9–10] and blue mackerel has [11–12] spines
Species identification may be done by relative distance between the spines: it is larger by half for chub mackerel
Summary
One diagnostic sign is enough for differentiation of chub mackerel Scomber japonicus and blue mackerel S. australasicus working with mass material. It is a number of spines in dorsal fin: chub mackerel has [9–10] (often 9) and blue mackerel has [11–12] spines. The species differ well by coloration of dorsal side: blue mackerel has «marbled» pattern with thin lines, in contrast to chub mackerel that has «zebra» pattern with thick lines. В дальневосточных водах России встречаются два вида скумбрий рода Scomber: японская S. japonicus и крупночешуйная S. australasicus (Линдберг, Красюкова, 1975; Парин и др., 2014; Catalog ..., 2015; Integrated Taxonomic Information System**).
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