rat fish does not need oxygen, their size is not big, and the demand for oxygen is not high, under normal filtration and water change conditions, they do not need to be specially oxygenated. Moreover, if there is less dissolved oxygen in the water, they can also swim to the surface to breathe, because they can use the back end of the intestine with abundant blood vessels to breathe fresh air on the surface of the water, so there is no need for oxygen to feed rats and fish normally. However, when the breeding density is high or the temperature is high, it is recommended that the breeder give them oxygen, because whether the density is high or the temperature is high, the oxygen in the fish tank will be reduced, so the breeder had better give them oxygen for a period of time.
need to be filtered, and they need strong filtration, because most rat fish live in fast-flowing streams or rivers, they can only maintain more exercise and active state when the current is strong, if they are raised at home, there is no larger current. It will make them inactive, and over time there will be obesity and other symptoms, so it is better for breeders to install filters and adjust the water flow, so as to be more suitable for the growth of rats and fish.
Moreover, ratfish prefer weak acid or neutral old water, because new water can cause skin diseases, so breeders need to strengthen filtration and minimize the frequency of water changes.
