Aquariumpro
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RegionFreshwaterSaltwaterBrackish

The Americas

From the Amazon's blackwater basins to Caribbean reefs — the Americas hold the most popular freshwater biotopes and a wealth of Atlantic and Pacific saltwater life.

1,013 species

Red Hook Silver Dollar

Red Hook Silver Dollar

Fish

Myloplus rubripinnis

A coin-shaped giant with a bold red fin and a serious appetite for plants.

Red Line Tetra

Red Line Tetra

Fish

Hyphessobrycon amapaensis

A tiny, rarely seen Brazilian tetra with vivid red and cream lateral striping.

Red Lips
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Red Lips

Fish

Satanoperca rhynchitis

A gregarious French Guiana cichlid with distinctive red lips and surprising gentleness outside of spawning.

Red Lizard Catfish

Red Lizard Catfish

Fish

Rineloricaria sp

A slender, peaceful whiptail with a mysterious origin and surprisingly easy breeding behavior.

Red Lyretail Swordtail
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Red Lyretail Swordtail

Fish

Xiphophorus helleri

A selectively bred swordtail with a ruffled dorsal fin and deep crimson color throughout.

Red Mouth Headstander

Red Mouth Headstander

Fish

Anostomus ternetzi

A boldly striped headstander that swims at its own angle. Literally.

Red Orange Neon

Red Orange Neon

Fish

Pseudomugil sp. "Red Neon"

Tiny, vivid, and electric. A micro-rainbow that rewards patient keepers.

Red Pencilfish

Red Pencilfish

Fish

Nannostomus mortenthaleri

A tiny, fiery Peruvian pencilfish that punches well above its weight in attitude.

Red Phantom Tetra

Red Phantom Tetra

Fish

Hyphessobrycon sweglesi

A deep-red schooling tetra that rewards you for keeping bigger groups.

Red Ramshorn

Red Ramshorn

Invert

Planorbella duryi

A peaceful, easy-to-keep snail that comes in surprisingly vivid color forms.

Red Root Floaters

Red Root Floaters

Plant

Phyllanthus fluitans

A fast-spreading floater with vivid red roots that shrimp absolutely love.

Red Soft Coral

Red Soft Coral

Coral

Gersemia rubiformis

A cold-water soft coral that brings vivid color to temperate reef tanks.

Redspot Cichlid

Redspot Cichlid

Fish

Amphilophus calobrensis

A rare Panamanian cichlid with a ferocious personality and fascinating parental behavior.

Red-spotted Copeina
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Red-spotted Copeina

Fish

Copella eigenmanni

A small, peaceful Amazonian schooler with subtle charm and fascinating breeding behavior.

Redspotted Tetra

Redspotted Tetra

Fish

Copeina guttata

A paternal nest-guarder from the Amazon with bold red spots and real personality.

Redstriped Eartheater

Redstriped Eartheater

Fish

Geophagus surinamensis

A mouthbrooding digger that sifts sand and fiercely guards its young.

Red Swamp Crayfish
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Red Swamp Crayfish

Invert

Procambarus clarkii

Hardy, bold, and endlessly entertaining. But a menace to planted tanks.

Redtail Catfish

Redtail Catfish

Fish

Phractocephalus hemioliopterus

A gorgeous river giant that almost no home aquarium can truly accommodate.

Red-tailed Flag Tetra

Red-tailed Flag Tetra

Fish

Hyphessobrycon agulha

A rare, peaceful tetra that anchors its entire species group by name.

Red-tailed Freshwater Barracuda, Spotted Cachorro

Red-tailed Freshwater Barracuda, Spotted Cachorro

Fish

Acestrorhynchus falcatus

A pike-like ambush predator that minds its manners with fish it can't swallow.

Redtail Splitfin

Redtail Splitfin

Fish

Xenotoca eiseni

A hardy livebearer with a nasty streak and genuinely fascinating reproductive biology.

Red Terror

Red Terror

Fish

Cichlasoma festae

A massive, fierce Ecuadorian cichlid that will eat anything it can fit in its mouth.

Red Tree Coral

Red Tree Coral

Coral

Primnoa pacifica

A cold-water Pacific gorgonian that brings dramatic branching structure to the display tank.

Red Wolf Fish

Red Wolf Fish

Fish

Erythrinus erythrinus

A bold, air-breathing predator that mimics killifish as a juvenile to lure prey

Regal Sea Fan

Regal Sea Fan

Coral

Leptogorgia hebes

A branching sea fan from the Atlantic coast, built for strong currents.

Reticulate Freshwater Stingray

Reticulate Freshwater Stingray

Fish

Potamotrygon orbignyi

A manageable freshwater ray for those ready to step up to serious specialist keeping.

Reynoldsi Cory
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Reynoldsi Cory

Fish

Corydoras reynoldsi

A tiny Colombian cory with a surprisingly long life and some endearing quirks.

Ribbon Coral

Ribbon Coral

Coral

Agaricia tenuifolia

A Caribbean frond coral that thrives under low light and gentle flow.

Ridgeless Cactus Coral
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Ridgeless Cactus Coral

Coral

Mycetophyllia reesi

A smooth, plate-like Caribbean coral with no ridges and an understated charm.

Ringtailed Pike Cichlid
✨AI

Ringtailed Pike Cichlid

Fish

Crenicichla saxatilis

A torpedo-shaped predator from Suriname's creeks, built to ambush and dominate.

Rio Napo cory
✨AI

Rio Napo cory

Fish

Corydoras napoensis

A tiny armored catfish from Ecuador that rewards patient keepers with decades of personality.

Ripsaw Catfish

Ripsaw Catfish

Fish

Megalodoras uranoscopus

A gentle giant catfish from the Amazon that travels in groups and growls.

River Goby

River Goby

Fish

Awaous banana

A sand-sifting river giant that grazes algae like an aquatic lawnmower.

Robusta Cory

Robusta Cory

Fish

Corydoras robustus

One of the largest corys around, rarely seen and worth the hunt.

Robust Ivory Tree Coral

Robust Ivory Tree Coral

Coral

Oculina robusta

A sturdy, branching Atlantic coral that thrives where others struggle with murky water.

Rocio spinosissima
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Rocio spinosissima

Fish

Archocentrus spinosissimus

A spiny Central American cichlid from Guatemala's Lake Izabal basin, rarely seen in the hobby.