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163 guides · Page 25 of 28
Beautifully maintained freshwater aquarium filled with lush green plants and several angel fish swimming.

Fishes / Habitat

Purpose and Types of Aquarium Substrate

Substrate does a lot more work than most beginners give it credit for. Beyond simply looking natural underfoot, it hosts beneficial bacteria, supports plant roots, shapes water chemistry, and affects

3 min read

Close-up of a colorful blue cichlid fish swimming in a lush freshwater aquarium.

Fishes / Habitat

How to Keep Aquarium Fish in Outdoor Fountains and Ponds

An outdoor water feature, whether a proper garden pond or a modest terrace fountain, can make a genuinely good home for certain fish, provided the setup respects what those fish actually need rather t

2 min read

A mesmerizing view of a school of fish swimming amidst lush aquatic plants in a freshwater aquarium.

Fishes / Habitat

Pictus Catfish: An Active Nighttime Hunter

The pictus catfish has a silvery body covered in dark spots, long trailing whiskers and a genuinely active, inquisitive personality that sets it apart from the more sedentary corydoras and plecos on t

2 min read

A giant gourami gracefully swimming inside a large aquarium with natural underwater scenery.

Fishes / Habitat

Thick-Lipped Gourami: An Underrated Cousin

The thick-lipped gourami is named for its noticeably fuller, more pronounced lips compared to its close relatives, a genuine anatomical feature rather than just a marketing name. It carries a pinkish

2 min read

A vivid close-up of a colorful koi fish swimming gracefully in clear water.

Fishes / Habitat

Can I Keep My Koi Fish Inside?

Koi are outdoor pond fish at heart, and most experienced keepers will tell you that plainly before you have even finished asking the question. That said, an indoor koi setup is not impossible, and ple

3 min read