Angelfish are among the most popular freshwater aquarium fish, known for their graceful appearance and semi-aggressive temperament. While they can coexist with various tank mates, some fish species are not suitable companions. Choosing the wrong tank mates can lead to stress, aggression, or even fatalities. If you’ve ever asked yourself, What fish can go with angelfish, it’s just as important to know which ones to avoid. In this article, we will discuss the fish species that should not be housed with angelfish and why they make poor tank mates.

Understanding Angelfish Behavior

Before selecting tank mates, it is essential to understand the behavior of angelfish. They belong to the cichlid family, making them somewhat territorial and aggressive, especially during breeding. They thrive in warm water (76-82°F) with a slightly acidic to neutral pH (6.5-7.5) and require plenty of swimming space. Although they are not the most aggressive cichlids, their temperament can lead to conflicts with incompatible fish.

Fish to Avoid Keeping with Angelfish

1. Small, Fast-Moving, and Nippy Fish

Some small fish are prone to fin-nipping, which can be problematic for angelfish due to their long, flowing fins.

• Tiger Barbs: These aggressive, fast-moving fish are notorious for nipping at angelfish fins, causing stress and injury.

• Serpae Tetras: While tetras can often coexist with angelfish, serpae tetras are fin-nippers and should be avoided.

• Danios (Zebra Danios & Giant Danios): Their high-energy swimming style can stress angelfish and encourage fin-nipping.

2. Tiny, Bite-Sized Fish

Angelfish have predatory instincts and will eat small fish that can fit in their mouths.

• Neon Tetras: Although they are beautiful and peaceful, their small size makes them a tempting snack for adult angelfish.

• Endler’s Livebearers: These tiny fish are too small to coexist safely with angelfish.

• Small Guppy Fry: While adult guppies may sometimes survive with angelfish, their fry will likely be eaten.

3. Extremely Aggressive Fish

Some fish are far too aggressive and territorial to share a tank with angelfish.

• African Cichlids: These fish are highly territorial and aggressive, making them a terrible match for angelfish.

• Jack Dempsey Cichlids: Known for their aggression, Jack Dempseys will likely bully or even kill angelfish.

• Green Terror Cichlids: As the name suggests, these fish are aggressive and will dominate the tank.

• Convict Cichlids: Another highly aggressive species that will likely harass and outcompete angelfish for food and space.

4. Bottom Dwellers That May Cause Conflicts

Although many bottom-dwelling fish can be great companions, some species are too aggressive or territorial.

• Red-Tailed Sharks: These fish can be territorial and may chase angelfish, creating unnecessary stress.

• Chinese Algae Eaters: Known for their aggressive tendencies as they mature, they may latch onto angelfish and suck on their slime coat.

• Large Plecos (Common Plecostomus): While they start small, common plecos grow over a foot long and can disturb angelfish with their movement.

5. Fish That Require Different Water Conditions

Some fish have very different water parameter needs, making them unsuitable tank mates for angelfish.

• Goldfish: Goldfish require cooler water temperatures (65-75°F) and produce a significant amount of waste, making them incompatible with angelfish.

• Discus Fish (Without Proper Care): While discus and angelfish share similar water requirements, discus require much more stable and pristine water conditions, making them challenging tank mates unless maintained by experienced aquarists.

What Fish Can Go With Angelfish?

While there are many fish to avoid, some species can live harmoniously with angelfish:

• Corydoras Catfish: Peaceful bottom dwellers that help clean the tank.

• Dwarf Gouramis: Generally non-aggressive and compatible with angelfish.

• Bolivian Rams: Mild-mannered cichlids that can coexist peacefully.

• Rummy Nose Tetras: Schooling fish that tend to avoid aggression.

• Bristlenose Plecos: Smaller plecos that help with algae control without disturbing angelfish.

Tips for a Peaceful Community Tank

To ensure a well-balanced aquarium, follow these key tips:

1. Choose Tank Mates Wisely: Avoid aggressive, fin-nipping, or tiny fish that may cause problems.

2. Provide Hiding Spots: Plants, driftwood, and caves give fish space to retreat and reduce stress.

3. Monitor Behavior: Keep an eye out for signs of aggression or stress, and be prepared to separate incompatible fish.

4. Maintain a Spacious Tank: A larger tank (at least 30 gallons) minimizes territorial disputes.

5. Feed a Varied Diet: Providing sufficient food helps reduce competition and aggression.

Conclusion

When setting up a community tank with angelfish, it is crucial to consider the compatibility of their tank mates. Fish that nip fins, are too small, highly aggressive, or have different water needs should be avoided. If you’re wondering "What fish can go with angelfish?", focus on peaceful, similarly sized fish such as corydoras, rummy nose tetras, and bristlenose plecos. By selecting the right tank mates and providing a well-structured aquarium, you can ensure a thriving and harmonious aquatic environment.