Close-up of an Oscar Fish

Best Tank Size for Oscar Fish (55, 65, 75, 90 or 125 Gallons?)

Oscar fish are a species of cichlid found mainly in the tropical waters of South America. They’re big, menacing-looking fish known for their black and orange markings reminiscent of a tiger. If you’re considering keeping this highly intelligent fish, you may be wondering what size tank is needed? Oscars are big fish and grow to …

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how to sex koi fish is easier than you might think

How to Sex Koi Fish

Koi fish make a vibrant addition to almost any extra-large freshwater indoor aquarium or outdoor pond. If you’re an aquarist and plan to breed or raise this ornamental species, you may be wondering how to tell the difference between the males and the females. The answer is… One way to sex koi fish is to …

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