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Porc behavior

Posted: Sat Apr 13, 2019 3:35 pm
by spamer80
Hello. I've kept a porcupine puffer for a long time. It's healthy, happy etc.Then I've bought a bigger tank, and decided to add another porc. Done. The small one was introduced to new tank first, then the old one. They accepted each other, swim together, beg for food, the smaller one slept on the bigger one's back. All was good. Half of a year passed.
Now the spring came, the tank temperature raised and the bigger one suddenly started to chase the smaller one. No harm, no bites, no attacks, just chasing and pressing the smaller one down to the sand and rocks. The smaller puffer seems stressed and pale. Like it does not understand what the bigger one wants. The tank is divided now, but both puffers keep looking to each other through the plastic "wall", where one swims, another tries to. No matter it is the big one or the smaller one. Both even tried to stagger the divider. The bigger one even jumped above it a few times. If divider is removed, the chase begins again. This picture is from Sep. 2018

Re: Porc behavior

Posted: Sun Apr 14, 2019 8:45 am
by Pufferpunk
Sounds like mating behavior between a sexually mature fish & a juvie. Glad you separated them!