This article is from the Aquaria: Good (and Bad) First Fish; Breeding FAQ, by Dean Hougen and Elaine Thompson
While Painted Glassfish were for a long time the only fish commonly
seen that had been "colorized" by unscrupulous marketers, the last
few years have seen several other fishes subjected to this abuse. One
of these is the White Skirt Tetra (an albino version of the Black
Skirt Tetra - Gymnocorymbus ternetzi) which are sold as Blueberry
Tetras, Strawberry Tetras, Rainbow Tetras, etc. depending on the dyes
used to color the individuals. Similarly, Blueberry and Strawberry
Loaches have also been seen. If you are unsure if a fish has been
dyed, ask.
 
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