

A sump holds additional filters that can be accessed from outside the fish tank.īucktooth Tetra. To reduce the extent of damage Oscars can do, particularly to important parts of your aquarium like heaters or filters, keep them in tanks with a sump at the bottom. These fish can grow up to one foot and are quite energetic. Oscars are usually not very aggressive towards other fish, but they are not very friendly to aquarium decor. Because each red devil requires 50 gallons of water per fish, there are not very many fish that can be kept with them. When adding other fish to your aquarium with red devils, make sure they can defend themselves. You will often notice them knock down decorations in your aquarium. The fish grow up to 15 inches and they like to dig. These freshwater fish are another highly aggressive cichlid. The Convict Cichlid attacks smaller fish or large less-aggressive fish.

They are 6 inches long but are very aggressive. The Convict Cichlid comes in various colors like pink, black, and zebra. Do not keep these fish with smaller ones to keep them from being eaten.Ĭonvict Cichlid. They will also uproot plants and move tiny decorations. The fish like digging into the bottom of their tank. The Jack Dempsey species are also known for their aggressive behavior, which is why they're named after the famous boxer. You will need to change their water less often because changing the tank's water less has been shown to reduce aggression in the species. After a little while, the school of angelfish will fight among each other in order to establish which one is dominant. These freshwater fish will always start well as a group. Always check your fish for signs of sickness to avoid aggressive behavior.īelow are some types of fish that are naturally aggressive: Other fish can become aggressive towards sick and weak fish. Some fish can become aggressive when they are sick. When picking your fish, consider species that are likely to grow at the same rate. Larger fish may take advantage of their size and fight smaller ones. An aggressive fish can get out of control if it feels crowded.įish size. The fish will have an equal chance to claim territory. If you have more than one aggressive fish, add them at the same time into your aquarium.This will encourage aggressive fish to create their territory in one of these places, and it will give the less aggressive fish space in the aquarium to swim freely. Make sure there are plenty of hiding places in your aquarium.It will eliminate any claims to territory for fish that you add to the aquarium. Rearrange the landscape of your aquarium before adding more fish.If you notice a fish create a territory and begin to fight other fish, there are several ways to help limit this behavior: Once you introduce an aggressive fish to your aquarium, it will attach itself to a particular section of the fish tank and not allow others near. Certain types of fish want to create and keep their own territory. This action will reduce fish fighting over one type of food. Also, try to offer different varieties of food to your fish. To minimize fighting over food, make sure you spread food evenly throughout the aquarium. An aggressive fish will fight off other fish that are perceived to be a threat during feeding sessions. Aggression in Fishīelow are some reasons why some fish species are aggressive:įighting for food. It’s essential that you know why certain species are aggressive before you add them to your aquarium. Fish that don't live in the right environment tend to be very aggressive.

It does not store any personal data.Certain fish species can sometimes become aggressive and hard to control. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. The cookies is used to store the user consent for the cookies in the category "Necessary".

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