I’ve got an electric blue acara flashing this morning… I have 3 juveniles in a tank, this morning, the largest appears to be flashing… 1st I’ve witnessed with these fish… not sure if they are just coming of age, or if the “hot tank” is the reason ( I’m treating for white spot on the “not Cupids” in that tank, so the temperature is at 86 degrees for the last couple days ) anyway he was spreading his fins, with a kind of rippling of electric blue, through his fins and tail… I am not trying to breed them, particularly due to the fact I’m heat treating for Ich right now… but interesting to watch… and he sure is pretty, when he wants to be…