Tetras choose to reside in densely vegetated aquariums, because they wish to congregate there. They're friendly fish that ought to be managed in groups of at most 5. This exclusive adaptation serves many needs for bioluminescent fish. It can be used for interaction, attracting mates, luring prey, or simply camouflage https://pearlaquatics.my/how-to-maintain-a-small-fish-tank/