How do I know if my fish are mating or fighting?

Energetic Mating Behavior
If the female Oscar plays hard to get, the suitor will become more physical with rubbing behavior that may look like fighting when it isn't. Oscar couples always get along even when they're not mating, so if you spot aggressive behavior and chasing, you'll know they're actually mating.
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How do you know if my fish are mating?

Mating Ritual

Signs that your goldfish are ready to mate include white spots along the gills of the males, and the female will become fatter and more rounded. The male will then chase the female around the tank to encourage her to release her eggs.
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Is it normal for fish to chase each other?

Fish chase each other for a variety of reasons, such as defending their territory, establishing dominance, competing for food, and mating. Even fish that are typically docile fish may chase others because of constant stress. This could be due to incompatible tank mates, poor water conditions, or an overcrowded tank.
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Why do my fish look like they are fighting?

Fighting Fish: If your fish are fighting, it generally means that they are not a compatible fit to be housed in the same aquarium. Many fish are naturally aggressive and will defend their territory to the death.
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What do fish do when mating?

In most cases, the female drops eggs in the water which are immediately fertilized by sperm from the male. Another way is for fertilization to occur within the females body before she drops them into the water. With the third and final method, the female retains the eggs within her body and the young are born alive.
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How to tell the difference between fighting and mating for angelfish. Mating ritual for angelfish.



How long is a fish pregnant?

Roughly 28 days. Keep reading to find out how do fish give birth in a tank.
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Are my goldfish fighting or mating?

The mating “dance” of goldfish is tiring and they will chase each other nearly to the point of exhaustion! This usually goes on for several hours and may also include the male nipping at the female's tail and fins. What is this? For obvious reasons, this behavior is often confused with fighting.
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Why are my fish nipping at each other?

Too many males for the number of females in a tank will also cause fin nipping, head butting, and other forms of aggression that can injure your fish. Schooling fish who are kept as the only one of their kind or in a too-small school can also turn aggressive and nip the fins of their nonschooling tankmates.
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Why is my fish attacking the other one?

If the fish are not getting enough food or enough of a particular nutrient, they will often chase each other or get into fights in a competition for limited resources. This can keep weaker fish from getting enough to eat. In extreme cases, it can even lead to cannibalism among the fish.
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How can you tell if a fish is pregnant?

As your female fish becomes pregnant, she will grow a bulge at the back of her abdomen. This typically appears over the course of 20-40 days. Does your fish have a red or black spot? Sometimes, when a female fish is pregnant, she will develop a “gravid spot” on the abdomen.
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How do I know if my fish tank is overcrowded?

If some young fish in your tank are constantly sticking to their corners or are becoming lethargic, there's your alarm. If some of your fish unexpectedly begin to die, then you definitely have an overcrowding problem. If this happens, make sure to identify signs of lethargy in other fish.
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What does fish aggression look like?

There will be visible signs if a fish has been attacked in the tank. Such signs include marks on its body and nips on its fins. A fish that is injured will shy away from the other fish to give itself time to heal. Territorial fish are likely to be aggressive toward fish of their own species that are of the same sex.
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Are my Tetras playing or fighting?

Neon Tetras are extremely playful fish. It is easy to confuse the way they play with aggression. The fish are likely to play with each other by chasing each other and jumping high in their tank. You should be able to easily tell the difference between fighting and playing.
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How long does it take for fish to get used to each other?

Most people will tell you that it takes about 15 minutes for fish to acclimate to an aquarium. While this is partially true, it takes at least an hour for a new fish to adjust entirely to a new environment. Float the bag in the aquarium until the water reaches the same temperature as that in the aquarium.
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Why are my goldfish rubbing against each other?

Territorial

The most common cause of a goldfish being territorial is if they are jealous of other fish in the tank or if the tank is too small. Territorial behavior is distinguished by chasing and nipping other goldfish away from a certain area in the tank.
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Why are my two goldfish chasing each other?

If your goldfish are chasing each other around the tank, this is sometimes the lead up to mating and generally not cause for concern. What is this? However, if your tank is overcrowded or your fish are in competition over food, your goldfish may become stressed and chase each other off in competition for resources.
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Why are my goldfish chasing one fish?

Overcrowded. Fantail goldfish can become aggressive if they don't have enough space in their fish tank. According to PureGoldfish.com, confined quarters can make the fish feel like they need to compete for space, causing them to chase one another in an attempt to claim their territory.
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Do pregnant fish lay on bottom of tank?

Pregnant females may also lay on the bottom of the tank prior to giving birth.
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Is it OK to overstock a fish tank?

Tanks that are overstocked will not only provide a stressful environment for the fish that will likely lead to disease, but overstocked tanks produce a lot more work for the aquarist. Maintenance must be done more often on a tank that is overstocked.
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How many fish is too many in a tank?

While the one inch of fish per gallon rule is a reasonable yardstick, it has its flaws. To be safe, with big-bodied fish like goldfish and cichlids, one inch of fish per two gallons of water is a safer rule to go by.
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How many fish should you add to your tank at once?

Adding too many fish to an aquarium at once can destabilize the water chemistry and can cause the nitrogen cycle to stall. As a good rule of thumb only add up to 3 fish at a time to your tank.
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