What months do fish spawn?

Female fish lay eggs, with the eggs being fertilized by the males in close attendance. Eggs develop more rapidly (in a few weeks) in warmer temperatures, and more slowly in colder water (up to months). Most freshwater fish spawn in the spring, although salmon, char, and some trout spawn in the fall.

How do you tell if fish are spawning?

Watch the male fish behavior. Around the time of spawning, they may swim in groups along the surface of the water or the edges of the pond (see Reference 1). The males will chase the females around the pond and attempt to beat the eggs out of her when the fish begin spawning (see Reference 1).

Why do fish chase each other around the tank?

To show dominance Among a shoal of a single fish species, you may notice that one or two fish routinely chase the others around the tank. These are usually male fish, and this is how they show their dominance. In the wild, just like among other animals, shoal-living species of fish often have a dominant male.

Do fish know when another fish is dying?

No, fish do not get “sad” if another fish dies. Fish do have a brain that is capable of some type of “emotion” but not to the extent that humans feel. They don’t feel anything like sadness, but may feel something to a smaller extent. Scientists have been able to train fish.

Why are my fish suddenly fighting?

The most common causes of fights among aquarium fish are food, mates, and territory. Territory is the biggest problem when it comes to aquarium fish aggression, especially if you have stocked your tank with very large fish.

Why is my fish attacking the other one?

A lot of times, a fish fight breaks out over territory. When it comes to defending their territory in the aquarium, some territorial fish can become extremely territorial and aggressive toward other fish. Whatever the chosen area, your fish might attack certain other fish species when they try to enter their area.

Are water changes stressful for fish?

On the other hand, if your tank’s pH is (for example) 6.3, while your replacement water has a pH of 7.5, replacing 50% of the water all at once will change the pH of your tank significantly (possibly more than 50% depending on buffering factors), which will stress your fish, possibly enough to kill them.

Is it bad to do a full water change?

There is absolutely nothing wrong with doing a complete water change. The ONLY time that’s a concern is if the tank has not had regular water changes for a while, because the water parameters could be very different from the source water. Beyond that, there is absolutely no harm in doing so.

Can fishes cry?

“Since fishes lack the parts of the brain that set us apart from the fishes — the cerebral cortex — I doubt very much that fishes engage in anything like crying,” Webster told LiveScience. “And certainly they produce no tears, since their eyes are constantly bathed in a watery medium.”