The Important Facts Of Carnivorous Freshwater Aquarium Fish

Last Updated on February 9, 2022 by Marco C.

Have you heard of carnivorous freshwater aquarium fish?  If not, you have come to the perfect place to understand more about them.  It is very important for any aquarium owner to be aware of this.

Carnivorous freshwater aquarium fish can be dangerous in your tank if they are not handled properly.  Fish like these eat meat.  This means that it is possible they eat the other fish in the tank.

If you want to have carnivorous freshwater aquarium fish you need to be very careful about which other fish you keep in your tank.  You have to be sure that those other fish will not become prey to carnivorous fish.  

Sometimes it may feel confusing or overwhelming to organize all the right information to have a successful aquarium.  Lucky for you, we have done all the research to give you an easy way to understand all about carnivorous freshwater aquarium fish! 

Keep reading now to learn all you need to know to set up an awesome aquarium!

Freshwater Predatory Fish

The best place for you to start is to understand which fish varieties are considered predatory fish.  Many of these carnivorous freshwater aquarium fish are the most attractive varieties to raise in your tank.  

Don’t get scared.  It is completely feasible to raise these fish, you just need to be careful. In fact, some of the very predatory fish are the most common to raise. Some varieties are extremely aggressive and others are only mildly aggressive.

The first fish that we find very interesting is the Flowerhorn Cichlid.  The Flowerhorn Cichlid is native to southeast Asia and is extremely beautiful.  Its bright pink color and interesting shape make it a nice choice for a home aquarium. 

However, they are considered to be pretty aggressive if not managed correctly.  If they have a good environment, these fish are actually very fun and playful! The minimum tank size to raise them is 70 gallons.  

This fish is part of the Cichlid family.  Many fish in the Cichlid family are aggressive.  So pay attention to the variety to be aware of potential aggressive tendencies.  

Another interesting carnivorous freshwater aquarium fish is the Red Tail Shark.  They are very active fish which love to swim around the tank.  This is why you need a large tank if you want to raise them.  

They need enough room to get their energy out.  The smallest tank size you can use is 55 gallons.  

If you want to raise Red Tail Sharks, you have to make sure to decorate your tank nicely.  When these fish have a good environment, their aggressive pattern is lowered.  When they are in an empty tank, they will become easily agitated. 

Red Tail Sharks

Learn more about: Mini Sharks For Aquariums

Semi Aggressive Fish

Another semi-aggressive fish that many aquarium owners like to raise is called the Tiger Barb.  The Tiger Barbs have beautiful yellow, orange and black stripes. 

If you raise tiger barbs with weaker and passive fish, they will bite their fins.  To ensure success, you can stick to only raising a group of tiger barbs in your tank.  They are very resilient fish and not difficult to raise.

The maximum size that tiger barbs can grow is 3 inches!  This means you do not need an extremely large tank.  The minimum tank size for these fish is 30 gallons.  

They are considered a pretty easy fish to raise and doable for beginners.  

Tiger Barb

Another beautiful fish you can consider is the Bucktooth Tetra fish.  These are very attractive, silverfish. 

They come from the tetra family but are aggressive towards many kinds of fish.  This includes other varieties from the Tetra group.  

Typically, they will bite off the fins of other fish when they are in the same tank.  They are not suitable to be raised with other fish.

So, if you want to raise them you should only keep them with other bucktooth tetras.  However, if they are kept in small groups they can begin to fight each other.  So you need to keep 12 of them together minimum.  

This will help keep them in balance and not have anyone competing for dominance.  These fish grow up to 5 inches.  The minimum fish tank size is 55 gallons.  

However, it’s always better to provide larger tanks and more space for your fish.  This will ensure they are happy and have a good life.

Pet Fish That Eat Other Fish

It’s always a bummer if you have a fish tank and notice your other fish are dying.  This often is because you have a pet fish that is eating your other fish.  

You have to be very careful to avoid this.  One way to not have this problem is to do a lot of thorough research before choosing your fish.  Be sure to understand which fish are compatible together.  

Another thing you can do is to always observe your fish tank on a daily basis.  You can notice if your other fish are being abused by seeing any signs of torn fins or cuts on their body.  

At that point, you can separate the fish to avoid losing any of them to predatory behavior.  

According to the University of Hawaii, “Overfishing and anthropogenic stressors have decimated Hawaiʻi’s coastal fisheries   This means that many predatory fish are going extinct. Keep this in mind when choosing your fish.  

You can consider raising these fish with the goal of rehabilitating them back into their natural environment.  Carnivorous freshwater aquarium fish are wonderful creatures. But unfortunately, many of them will be unable to be found in nature soon.  

Always keep this in mind when raising special fish in the aquarium.  Where did these fish come from?  Are they part of an exotic pet trade which is very harmful to animals?

Overall, it is possible to raise carnivorous freshwater aquarium fish.  Hopefully, this article gave you an idea of a few species to start with.   There are plenty more interesting fish varieties aside from the ones listed here.

Do your research and have fun experimenting.  Feel free to comment and ask questions below!

Read more about: How to Breed Bristlenose Plecos?


What are carnivourous fish?

Carnivorous freshwater aquarium fish can be dangerous in your tank if they are not handled properly. Fish like these eat meat. This means that it is possible they eat the other fish in the tank.