What characteristic color markings may be present on younger Wels Catfish specimens?
Answer
Dark spots or blotches on their flanks that fade
While large, adult Wels Catfish typically exhibit a uniform dark coloration, generally ranging from olive-green to dark grey or black along the back and sides, younger specimens present a variation. Younger individuals may display distinct dark spots or blotches scattered across their flanks. A key aspect of their development is that these markings are temporary and tend to diminish and eventually fade away completely as the fish grows and matures into the solid color pattern characteristic of adults.
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