Be aware that Green Terror Cichlids will form bonded pairs when kept in groups, and this can increase aggressive tendencies toward other tank mates if they feel the need to protect their partner or territory.Ģ3. They will eat smaller tank mates, so they’re best kept with other large tank mates. They reach up to a foot in length and can be kept in community aquariums under specific circumstances. The Green Terror Cichlid is one of the most brightly colored and beautiful Cichlid fish for freshwater aquariums. Green Terror Cichlid Image Credit: Piqsels These carnivores will happily eat smaller tank mates and will behave aggressively toward large tank mates.ġ3. Very few tank mates are recommended for these fish, with the exception of large Plecos, like the Common Pleco, which can withstand bullying from the Jaguar Cichlid. They are known for aggression toward tank mates, especially during breeding periods. Since these fish can grow to around 4 feet in length, you’d have to have a truly massive tank to safely house two Arowanas together.Ī post shared by Paul Needham Jaguar Cichlid is a large variety of Cichlid that can reach up to 2 feet in length. Arowanas are especially intolerant of other Arowanas in their space. The most expensive freshwater fish ever sold was a Platinum Arowana that sold for almost half a million dollars. The Arowana isn’t just one of the most aggressive fish you can get for a freshwater aquarium, but it’s also the most expensive. Arowana Image Credit: Arunee Rodloy, Shutterstock The 26 Most Aggressive Freshwater Aquarium Fish 1. Maybe you’ve even owned the fish in question and wondered why they didn’t work out in your community tank. Or, in some cases, maybe you’re used to seeing some of these fish in home aquariums. Here are some of the most aggressive freshwater aquarium fish that you’re unlikely to see on a regular basis in most aquariums. However, it’s not unusual for some fish to not be popular with the average fishkeeper due to aggressive tendencies that make it difficult to select tank mates or even manage the fish.

Sometimes, people take a particular interest in oddball fish that are not common in most home aquariums. Regardless of the fish, it’s important to select appropriate tank mates that will be a safe match in the aquarium. When it comes to freshwater aquariums, we’re all used to seeing things like Goldfish, Bettas, Neon Tetras, and various types of snails.

Freshwater piranha