Species
Browsing 1,134 species. Use the filters below to narrow down.
Red Line Tetra
FishHyphessobrycon amapaensis
A tiny, rarely seen Brazilian tetra with vivid red and cream lateral striping.
Red Lizard Catfish
FishRineloricaria sp
A slender, peaceful whiptail with a mysterious origin and surprisingly easy breeding behavior.
Red Lyretail Swordtail
FishXiphophorus helleri
A selectively bred swordtail with a ruffled dorsal fin and deep crimson color throughout.
Red Mouth Headstander
FishAnostomus ternetzi
A boldly striped headstander that swims at its own angle. Literally.
Red Phantom Tetra
FishHyphessobrycon sweglesi
A deep-red schooling tetra that rewards you for keeping bigger groups.
Red Rainbowfish
FishGlossolepis incisus
A deep-bodied red rainbow that rewards group keeping with dazzling male displays.
Red Side Barb
FishPuntius bimaculatus
A peaceful, active schooler from South Asian streams with a vivid red flanks in males.
Redspot Cichlid
FishAmphilophus calobrensis
A rare Panamanian cichlid with a ferocious personality and fascinating parental behavior.
Red-spotted Blenny
FishSalarias segmentatus
A reef-dwelling algae grazer with bold red spots and a big personality.
Redspotted Tetra
FishCopeina guttata
A paternal nest-guarder from the Amazon with bold red spots and real personality.
Redspot wrasse
FishPseudocoris yamashiroi
A fast-moving reef wrasse with vivid pink tones and open-water energy.
Redstreaked Blenny
FishCirripectes stigmaticus
A reef-flat blenny with bold red facial markings and loads of personality.
Redstriped Eartheater
FishGeophagus surinamensis
A mouthbrooding digger that sifts sand and fiercely guards its young.
Red-striped Rainbowfish
FishMelanotaenia splendida rubrostriata
A slow-burning rainbowfish that rewards patient keepers with spectacular adult color.
Red-striped Rasbora
FishRasbora pauciperforata
A slender, red-striped schooler that thrives in soft, tannin-rich blackwater setups.
Red Swamp Crayfish
InvertProcambarus clarkii
Hardy, bold, and endlessly entertaining. But a menace to planted tanks.
Redtail Barb
FishDischerodontus ashmeadi
A rare, bottom-dwelling schooler with vivid red-tipped fins and secretive nocturnal habits.
Redtail Butterflyfish
FishChaetodon collare
A reef native that pairs for life but rarely forgives a rough transition to captivity.
Redtail Catfish
FishPhractocephalus hemioliopterus
A gorgeous river giant that almost no home aquarium can truly accommodate.
Red-tailed Flag Tetra
FishHyphessobrycon agulha
A rare, peaceful tetra that anchors its entire species group by name.
Red-tailed Striped Sand Loach
FishAborichthys elongatus
A pebble-stream loach from the Himalayan foothills with a fondness for fast water.
Red Tail Garra
FishGarra sp. "Redtail"
A mysterious, proboscis-nosed stream fish with mood-signaling facial hardware.
Red Tail Shark
FishEpalzeorhynchos bicolor
Bold looks, bolder attitude. This Thai native demands respect in any tank.
Redtail Splitfin
FishXenotoca eiseni
A hardy livebearer with a nasty streak and genuinely fascinating reproductive biology.
Red-tail Tinfoil Barb
FishBarbonymus altus
A bold, active schooling barb that quickly outgrows most home aquariums.
Red Top Williamsi
FishPseudotropheus williamsi
A feisty Malawi cichlid with a vivid orange-red dorsal that demands attention.
Reef Chromis
FishChromis retrofasciata
A bite-sized reef chromis that hugs branching corals and minds its own business.
Reticulated Hillstream Loach
FishSewellia lineolata
A bold hillstream loach with bold patterning and surprisingly easy breeding.
Reunion Angelfish
FishApolemichthys guezei
One of the rarest angelfishes in the world, barely known to science or hobby.
Reynoldsi Cory
FishCorydoras reynoldsi
A tiny Colombian cory with a surprisingly long life and some endearing quirks.
Ringtailed Pike Cichlid
FishCrenicichla saxatilis
A torpedo-shaped predator from Suriname's creeks, built to ambush and dominate.
Rio Napo cory
FishCorydoras napoensis
A tiny armored catfish from Ecuador that rewards patient keepers with decades of personality.
River Goby
FishAwaous banana
A sand-sifting river giant that grazes algae like an aquatic lawnmower.
Robusta Cory
FishCorydoras robustus
One of the largest corys around, rarely seen and worth the hunt.
Rocio spinosissima
FishArchocentrus spinosissimus
A spiny Central American cichlid from Guatemala's Lake Izabal basin, rarely seen in the hobby.
Rock Beauty
FishHolacanthus tricolor
A bold Atlantic angel with dramatically different juvenile and adult coloration.