Why Fish Hide in Aquariums

[FamTimes reporter Jennylyn Gianan] In an aquarium, it is easy to see many beautiful fish swimming and playing, as well as hiding among the plants or accessories in the tank.

Does this behavior mean that the fish are shy? Experts say it does not. Fish may hide because they are frightened by or uncomfortable with their surroundings.

The following factors can make fish uncomfortable or afraid.

First, an unfamiliar environment. This is the most likely explanation. Fish that have recently arrived at an aquarium, in particular, may simply feel anxious about their new surroundings. After a few days, they will become comfortable in the new environment and spend more time out in the open.

Fish may hide when they are bullied by other fish in the aquarium. Sometimes, when a new fish is introduced, a fish that was not previously aggressive becomes aggressive. This is to defend its space from the newcomer.

It is a good idea to rearrange the aquarium decorations to calm the fish. This gives the fish a fresh start, so none of them feel the need to defend their territory.

As for hiding places, when there is only one place to hide, fish tend to remain nearby so they can retreat into it when danger arises.

Providing more hiding places encourages even timid fish to come out more often. It is a good idea to stack rocks to form caves, place pottery on the bottom, add pieces of wood with holes, or provide other objects where fish can hide. When fish feel that plenty of hiding places are available, they feel secure and swim out more often.

Fish species that school with members of their own kind also tend to hide if they are alone in an aquarium or kept in a group that is too small. Schooling fish should be kept together in groups of at least four to five.

Jennylyn Gianan fam1@pcss.co.kr