

Goldfish thrive in colder waters that should be between 60° and 74° F, therefore, room temperature water is fine with them and a heater is not necessary.

They’re like a rite of passage for all aquarists, being one of the hardiest and beginner-friendliest fish around. Goldfish are by far the most popular fish in home aquaria.

You should be careful not to feed your mollies too much food (keep feeding to 2-3 times a day offering them small amounts each time), because they produce a lot of waste, which can cause water chemistry issues. Mollies enjoy plants in their tank not only for cover and shade but also because they like to nibble on algae that grows on plants. Molly fish thrive on an omnivorous diet with brine shrimp, flake foods with high vegetable matter, tubifex, daphnia being staples in their diet. Having said that, aquarium salt is often used to treat diseased mollies in quarantined aquariums. It’s a misconception that all molly fish require salt in their water, it’s more like most molly fish can survive in brackish water if needed, but salt per se isn’t something mollies can’t live without. If kept in a species-only aquarium, some molly fish will enjoy a little aquarium salt in their water, something that other freshwater fish cannot tolerate. A 25-30-gallon tank is a suitable size for 4-6 molly fish.Īs for their water parameters, molly fish aren’t too picky - water temperature should be in the 70☏ to 82 ☏ range, water should be a bit hard with values around 15-30 dGH, while water pH should be around 7.0-8.0.Īs you can see there’s lots of wiggle room in temperature and other water parameters for molly fish, however, they do enjoy stable water conditions without sudden changes or disruptions. Mollies also enjoy being kept in groups, which is yet another reason to offer them a roomy tank. They’re active fish, however, so plenty of swimming space is crucial for them. Molly fish are a diverse species that enjoy spacious, well-planted tanks despite not being large fish. Molly fish and goldfish cannot be kept in the same aquarium because of their different water requirements and behavioral differences that make them incompatible.įor a better understanding of their incompatibility, let’s see exactly what their requirements are and what behavioral traits define molly fish and goldfish: Molly Fish Therefore, if you were hoping to add some mollies to your goldfish aquarium, or vice versa, you’ll have to pick other mates, because these two are simply not a good match. Not all freshwater fish can be kept in the same aquarium and this is true for goldfish and molly fish too. Still, don’t go running to the pet store just yet. If you’re thinking about adding goldfish to your molly tank, I suggest you hold that thought while you read my article on whether you can keep molly fish and goldfish in the same aquarium.Ī mixed-species fish tank is a delightful sight and a great way to observe the behavior of different types of fish. Love your molly fish, but you’re eager to keep other fish in your aquarium hoping to have a diverse fish tank that you can marvel at each day? As an Amazon Associate we earn from qualifying purchases. This page may contain affiliate links, which will earn us a commission.
