HenryC Posted June 25, 2021 Share Posted June 25, 2021 (edited) I just recently saw a post regarding a lamb chop rasbora not swimming around with the group of harlequins in the same tank. I find it fascinating how fish won't school with others, even if they're nearly identical, for example neons and cardinals. You see the example everywhere! Even if they're borderline the same, they won't school if they're not the same species. I've always wondered what are the mechanisms they use to differentiate themselves from other, very similar species. It has to be with pattern recognition for sure right? Not sure if there are papers about this, but my theory is that they have evolved to develop and recognize unique patterns and colors, that's why you see lots of different patterns, and sometimes unusual ones, like the silver tips on silvertip tetras, the full red line on cardinals VS. the half red line on neons, the red spots on bleeding heart tetra VS the black one on serpae, rummynose's characteristic red snout and checkered tail, black neon's white and black lines, etc. They're programmed to scan for these cues that tell them they're good to group and mate with them. Someone once told me pheromones had to be responsible as well. Do you think that's the case? What do you think about it? Edited June 25, 2021 by HenryC Link to comment Share on other sites More sharing options...
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