Other species should be big enough not to fit into the fish’s mouth. To prevent accidental feedings, try to keep tank mates around the same size as your goldfish. If you have small fish in the tank, it won’t be long until they get mistaken for food! It’s not so much an act of aggression on the goldfish’s part, but rather an issue of mistaken identity! You can see these creatures attempting to eat everything from gravel to plant leaves! They are constantly searching for food and will eat just about anything they can get their mouths on. However, you should really match the size of the companion fish to your goldfish.Īuthor Note: Goldfish have strong appetites. Around three to four inches long is ideal. When you’re talking about goldfish tank mates, medium-sized fish are the way to go. Here’s a trait that many fail to consider. The constant back-and-forth is not healthy for any fish involved, so keep personalities relatively similar. They know no boundaries, which could be a problem for fish that want to claim space. Goldfish like to make use of the entire tank. This is especially true with fancy and or slow-moving varieties.įurthermore, putting an aggressive or territorial fish into the mix could cause undue stress for both parties. Goldfish aren’t capable of defending themselves against high-strung fish. You should avoid any species that have a tendency to exhibit any forms of aggression. Easy-Going Temperamentįor the most part, goldfish are docile and easy-going. For this reason, species that require ultra-warm waters are out of the question. Generally, goldfish do best in aquariums that don’t have any additional heating sources. Some varieties prefer even cooler climates! Goldfish can usually live comfortably in temperatures between 65☏ and 75☏. They are not from tropical environments like a vast majority of species in the trade. You see, goldfish hail from cooler mountain streams. But when you compare a goldfish’s comfortable temperature range to other popular species, there’s a big difference! Of course, these fish still need relatively warm waters to stay healthy. In the fishkeeping community, goldfish are considered cold water fish. The first thing you can use to narrow down your search for goldfish tank mates is the preferred temperature range. As a result, there are several traits to consider for potential tank mates.Ĭheck out the most important ones below. Goldfish are unique compared to most tropical fish in the trade. The trickiest part of creating a flourishing community with these freshwater fish is choosing compatible goldfish tank mates. However, curating a community habitat with goldfish is not as easy as it seems. Peaceful and playful, goldfish can thrive in a multi-species environment. While goldfish are indeed beautiful and iconic enough to enjoy on their own, they make great additions to community tanks as well. Dropsy In Fish: Your Guide To Symptoms & Treatment.Why Is My Goldfish Turning White? All Possible Causes.Why Your Betta Fish Is Laying At The Bottom Of The Tank.

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