Abstract
A comparison of spawning features, eggs and larvae between spined loach from northern Italy and northern Germany revealed differences in egg size, clutch size and number of portions per female. Larvae differed in the presence of a ventral pigment row in C. taenia which was absent in C. bilineata. Two pigmentation intensity morphs occurred in C. bilineata larvae while in C. taenia larvae only one morph was observed. These differences (and the observations of others) suggest that the two taxa are different species.
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