Flora & Fauna
673 entries β care guides, placement tips, and notes from the community
Yellow Tang
Zebrasoma flavescens
Brilliant solid yellow tang from Hawaiian reefs. A staple of the reef aquarium hobby. Excellent algae grazer and generally peaceful.
Yellow Watchman Goby
Cryptocentrus cinctus
Vibrant yellow with blue spots, best known for its mutualistic relationship with pistol shrimp β the shrimp digs and maintains a shared burrow while the goby stands guard. A staple of any reef tank.
Yoyo Loach
Botia almorhae
The yoyo loach gets its name from the Y-O-Y-O pattern visible on juveniles. Active, social, and entertaining, it is one of the most popular loaches in the hobby. An excellent snail hunter that becomes bolder and more colourful with age.
Zebra Danio
Danio rerio
Zebra danios are robust, active schooling fish characterised by horizontal blue and silver stripes. They are among the most beginner-friendly species available, tolerating a wider range of water conditions than most tropical fish. Their bold, zippy behaviour makes them excellent dither fish to reduce the shyness of more reclusive tankmates.
Zebra Loach
Botia striata
The zebra loach has bold, narrow vertical stripes across its body. Smaller and more peaceful than many other botia loaches, it is suitable for community tanks and remains manageable in size. Like all loaches it is social and needs companions.
Zebra Nerite Snail
Neritina natalensis 'Zebra'
The Zebra Nerite Snail is the most recognisable nerite variety, with a distinctly striped shell of alternating black and yellow bands that closely resembles a zebra's coat. Like all nerites it is an outstanding algae grazer β consuming green spot algae, diatoms, and film algae from glass, plants, and rockwork β and cannot reproduce in freshwater, keeping populations controlled. Hard water is essential for maintaining healthy shell integrity.
Zoanthids
Zoanthus sp.
Zoanthids (zoas) are colonial soft corals that form mats of individual polyps in an extraordinary range of colours and patterns, making them highly collectible. They are among the hardiest corals for beginner reef keepers and grow rapidly under good conditions. Some zoa morphs contain palytoxin; always wear gloves when handling.