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370 guides · Page 13 of 62
Colorful coral reef with diverse marine life in a vibrant underwater aquarium scene.

Fishes / Habitat

Reef Tank Temperatures: How High Is Too High?

Temperature is arguably the single most dangerous parameter in a reef tank, not because target ranges are narrow, but because equipment failure can push temperature to a lethal level faster than almos

3 min read

Vibrant aquarium fish swimming among lush green plants in a freshwater tank.

Fishes / Health

Understanding Columnaris Disease in Aquarium Fish

Columnaris, caused by the bacterium Flavobacterium columnare, is one of the more aggressive common bacterial infections in freshwater fishkeeping, and unlike many aquarium ailments, it can move from f

3 min read

A vivid yellow cichlid fish swims gracefully in a dimly lit aquarium.

Fishes / Getting Started

Setting Up a Cichlid Tank That Actually Works

Cichlids are among the most rewarding fish to keep, showing genuine personality and often striking colour, but they also break more beginner rules than almost any other group, which is why a cichlid t

2 min read

Dynamic underwater scene depicting a vibrant shoal of colorful fish swimming by coral reef.

Fishes / Habitat

Gold Barb: A Sunny Colour Variant With Real History

The gold barb, Barbodes semifasciolatus, is most commonly seen in the trade in its selectively bred golden-yellow form, though the wild colour form is a duller olive green with faint dark bars. It com

2 min read