Fish

Behaviour

Behaviour advice for fish, written from real experience.

Behaviour

Pleco hiding all day after being added to new tank

A pleco that hides all day in a new tank is almost always behaving normally, not struggling, since plecos are nocturnal and a strange tank with little cover makes that instinct stronger. Here is how long settling in actually takes and the signs that mean it is more than shyness.

Daniel Okafor

Behaviour

Why is my nerite snail covering the glass in white eggs?

Those hard white dots covering your glass and decor are nerite snail egg capsules, not a parasite or a disease. Here is what they are, why one snail can produce so many, and why they will never hatch in an ordinary freshwater tank.

Daniel Okafor

Behaviour

Why is my betta fish flaring

Gill flaring and spread fins look alarming, but in a betta they are usually normal communication, not distress. Here is what flaring means, what sets it off, and when it is worth worrying about.

Daniel Okafor

Behaviour

Why are my fish fighting

Fish aggression is usually not bad luck but a predictable result of the wrong mix, too little space, or too few of a schooling species. Here is how to work out the cause and calm the tank.

Daniel Okafor

Behaviour

The signs your fish is stressed

Fish cannot yelp or hide under the bed, but they show stress clearly once you know what to look for. Here are the signs, and what they are usually telling you.

Daniel Okafor