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Shoal & Stem

Flora & Fauna

673 entries — care guides, placement tips, and notes from the community

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Banggai Cardinalfish

Pterapogon kauderni

fishsaltwater

Elegant black-and-silver with distinctive elongated fins and bold stripes. A mouthbrooder — the male incubates eggs in his mouth until hatching. One of the few marine fish regularly bred in home aquaria.

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Coral Beauty Angelfish

Centropyge bispinosa

fishsaltwater

Deep blue body with orange-yellow sides and purple highlights. Hardiest of the dwarf angels. Generally reef-safe but may nip soft corals.

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Firefish Goby

Nemateleotris magnifica

fishsaltwater

Elegant dartfish with a fiery orange-red tail and white-to-yellow body. Shy but beautiful. Tends to jump so a tight-fitting lid is essential.

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Flame Hawkfish

Neocirrhites armatus

fishsaltwater

Vivid red with black dorsal markings and outline — perches atop gorgonians and Acropora waiting to ambush prey. Completely reef-safe with corals but will eat small shrimp. Charismatic and bold.

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Foxface Rabbitfish

Siganus vulpinus

fishsaltwater

Bold yellow body with intricate brown-and-white facial patterning. Has venomous spines so handle carefully. Outstanding algae and nuisance weed grazer.

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Green Chromis

Chromis viridis

fishsaltwater

The quintessential schooling reef fish — shimmering apple-green in open water above Acropora. Incredibly hardy and peaceful. Best kept in groups of 6+ for the most natural look.

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Kole Tang

Ctenochaetus strigosus

fishsaltwater

Brown tang covered with fine yellow-orange spots. Excellent detritivore and algae grazer. More peaceful and compact than most tangs. Great reef fish.

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Lawnmower Blenny

Salarias fasciatus

fishsaltwater

The go-to algae control fish for reef tanks — relentlessly grazes film algae and hair algae off rocks and glass. Camouflaged brown-grey with warty skin and charismatic perching behaviour.

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Longnose Hawkfish

Oxycirrhites typus

fishsaltwater

Instantly recognisable by its elongated snout and white body with red grid pattern. Perches in gorgonian sea fans and black coral, propping itself on its fins. Bold and long-lived in captivity.

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Lubbock's Fairy Wrasse

Cirrhilabrus lubbocki

fishsaltwater

Strikingly colourful — males flash vivid red, orange, and yellow with iridescent highlights during display. Peaceful and active; best kept as one male with several females. A jewel of the mid-water column.

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Maroon Clownfish

Premnas biaculeatus

fishsaltwater

The largest clownfish species, maroon-red with bold white stripes. Highly aggressive — best kept as a single specimen or bonded pair. One of the most striking reef fish available.

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Melanurus Wrasse

Halichoeres melanurus

fishsaltwater

Dazzling rainbow colouration — females green-blue, males sporting a vivid magenta-and-green pattern. A sand-diver that buries to sleep. Natural predator of flatworms and pyramid snails.

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Midas Blenny

Ecsenius midas

fishsaltwater

Brilliant golden-yellow with a flowing, eel-like body. Often mimics Lyretail Anthias in colour. Perches on rockwork and darts into crevices when startled — reef-safe and entertaining to watch.

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Neon Goby

Elacatinus oceanops

fishsaltwater

Tiny electric-blue-striped goby renowned as a cleaner fish — will pick parasites from larger tank mates. Ideal for nano reefs. The Caribbean's answer to the cleaner wrasse.

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Ocellaris Clownfish

Amphiprion ocellaris

fishsaltwater

The iconic clownfish made famous by Finding Nemo. Hardy, peaceful, and symbiotic with anemones. Excellent beginner saltwater fish.

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Orchid Dottyback

Pseudochromis fridmani

fishsaltwater

Vivid orchid-purple throughout — one of the most coveted nano reef fish. A Red Sea endemic that is now tank-bred widely. Bold personality for its size; can be aggressive to smaller fish.

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Pajama Cardinalfish

Sphaeramia nematoptera

fishsaltwater

Unmistakable with its yellow head, dark mid-band and polka-dotted orange rear — like a fish in pyjamas. Nocturnal schooler that hovers in groups near branching corals. Very peaceful and reef-safe.

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Pink Skunk Clownfish

Amphiprion perideraion

fishsaltwater

Pale pink-orange with a single white dorsal stripe and cheek bar. One of the smallest and most peaceful clownfish — ideal for nano reef tanks alongside Magnificent Anemones.

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Purple Firefish

Nemateleotris decora

fishsaltwater

One of the most visually striking nano reef fish — white to yellow body fading into vivid purple-magenta. Peaceful and reef-safe; will jump, so a tight lid is essential.

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Royal Gramma

Gramma loreto

fishsaltwater

Arguably the most striking Caribbean reef fish — front half vivid purple, rear half bright yellow. Hardy, peaceful, and reef-safe. Tends to hang upside-down under ledges mimicking its cave habitat.

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Scissortail Dartfish

Ptereleotris evides

fishsaltwater

Slender, schooling dartfish with a distinctive forked tail and blue-grey body. Best kept in pairs or small groups; will share a burrow. Reef-safe and active in the mid-water column.

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Scopas Tang

Zebrasoma scopas

fishsaltwater

Elegant, understated tang ranging from brown to blue-grey with fine markings. Peaceful and hardy. Excellent algae grazer and reef-safe.

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Six Line Wrasse

Pseudocheilinus hexataenia

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Active and colourful wrasse with six horizontal blue stripes. Pest controller — eats flatworms and small pests. Can be territorial with similar species.

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Tailspot Blenny

Ecsenius stigmatura

fishsaltwater

One of the most popular reef blennies — mottled tan with a characteristic black tail spot and expressive eyes. Grazes on algae and is generally reef-safe with corals. Full of personality.

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Tomato Clownfish

Amphiprion frenatus

fishsaltwater

Bold, tomato-red with a single white cheek stripe. Hardy and beginner-friendly, closely related to the Ocellaris. Pairs readily with bubble-tip anemones in captivity.

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True Percula Clownfish

Amphiprion percula

fishsaltwater

Slightly more vibrant coloring than its ocellaris cousin. Pairs beautifully with Bubbletip or Magnificent anemones. Very popular reef fish.

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Yellow Tang

Zebrasoma flavescens

fishsaltwater

Brilliant solid yellow tang from Hawaiian reefs. A staple of the reef aquarium hobby. Excellent algae grazer and generally peaceful.

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Yellow Watchman Goby

Cryptocentrus cinctus

fishsaltwater

Vibrant yellow with blue spots, best known for its mutualistic relationship with pistol shrimp — the shrimp digs and maintains a shared burrow while the goby stands guard. A staple of any reef tank.