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A guide to goldfish behavior and why female and male goldfish act the way they do. ... You must know that during the mating season male goldfish tend to become a bit aggressive and "chase" the female. Unfortunately goldfish tend to get aggressive with each other and start nipping at other fish when they are stressed.


Goldfish Spawning Behaviour in Garden Pond. Ever come down in the morning and wonder what on earth your goldfish are up to when you go to feed them? If it looks like this - could be you have at ...


Water temperature controls every aspect of goldfish sex, from when eggs hatch, to which fish become male and which become female. Temperature must be right for fish to reach sexual maturity, and it controls the onset of the breeding season. Sexual behavior will not happen for goldfish until the mercury hits between 70 and 78 degrees Fahrenheit.


What do goldfish typically act like in the breeding season? Ever since it got really rainy, they've been acting odd. We did water tests yesterday and today, and everything was good save that the ammonia was up a little to .5, but, according to the test, not enough to bother them (they've been fine in worse).


How to Breed Goldfish. Breeding goldfish is not as easy as it sounds. Creating the right environment for your goldfish, finding fertile mates, encouraging procreation and ensuring the correct incubation and birth of eggs are all essential...


Goldfish will often come to the top of the tank when someone approaches or follow the progress of a hand moving on the other side of the glass. Foraging. Goldfish love to dig about in the substrate of the tank! This is normal goldfish behavior and one that you will be able to observe quite often.


Right before spawning, male goldfish begin to chase female goldfish. Hobbyists call this the spawning chase. In fact, this behavior is the most reliable way to tell male goldfish from females, since spawning tubercles may be not be obvious in certain individual and females' more rounded shape is somewhat subtle.


When are goldfish ready to mate? Mating behavior in goldfish is very distinctive. Once you know what the signs are you will have no problems spotting it! Firstly, the male goldfish will develop small, white spots along their gills (these can often be mistaken for signs of disease, so look carefully!).


This explains what had happened… The aggressive behavior during the mating process explains why one of the goldfish had been playing while mating and had jumped out of the pond (not by choice) For the future, I will lower the water level during the mating season to avoid anymore miss-haps like this. Mike Gannon Says: on April 14, 2016 at 12:24 am