Will red tail sharks attack goldfish?

Red-tail sharks are known for being aggressive towards other fish, and goldfish are definitely on their potential "attack list."

Here's why:

* Predatory nature: Red-tail sharks are predatory fish and have a strong instinct to hunt smaller fish. Goldfish, especially smaller varieties, are easy targets.

* Territorial: Red-tail sharks can be very territorial, especially in smaller tanks. They'll often attack fish that enter their perceived territory.

* Aggressive behavior: Red-tail sharks can be aggressive even with other red-tail sharks, so it's not surprising they'll attack other species.

Therefore, it's generally not recommended to keep red-tail sharks with goldfish. While some people claim they've been successful, it's a risky proposition. It's much safer to keep them with other more robust and aggressive fish species.

Here are some additional things to consider:

* Tank size: A larger tank can help mitigate aggression, but it's not a guarantee.

* Hiding places: Providing plenty of hiding places for goldfish can help them avoid a shark attack, but it won't completely prevent it.

* Compatibility: Research the specific species of red-tail shark and goldfish you're considering to ensure they are compatible in size, temperament, and care requirements.

It's always best to err on the side of caution and choose compatible fish for your aquarium.