Atlantic & Europe
The cooler side of the reef world, plus European freshwater — temperate species, Mediterranean reefs, and the North Atlantic.
115 species
Dwarf Hygrophila
PlantHygrophila polysperma
The bulletproof beginner plant that thrives on neglect and outgrows almost anything.
Eared Watermoss
PlantSalvinia natans
A fast-spreading floating fern that shades tanks and shelters fry naturally.
Encrusting Leather Coral
CoralAlcyonium coralloides
A Mediterranean native that brings old-world reef character to the cold-water tank.
European catfish
FishSilurus glanis
One of the largest freshwater fish alive, and it knows it.
Finger Coral
CoralAlcyonium spitzbergense
A cold-water soft coral from the Arctic, rarely seen but genuinely fascinating.
Flame Box Crab
InvertCalappa flammea
A brilliantly patterned box crab that buries itself and cracks shells with ease.
Floating Crystalwort
PlantRiccia fluitans
A floating liverwort that pearls with oxygen bubbles when truly happy.
French angelfish
FishPomacanthus paru
A bold Atlantic giant that pairs for life and rules its reef corner.
Glacial Sideractinid
CoralSideractis glacialis
A cold-water Mediterranean solitary coral that thrives in dim, gentle conditions.
Golden Zoanthid
CoralParazoanthus swiftii
A golden colonial zoanthid from Caribbean and Atlantic reefs, thriving in low light.
Golf Ball Coral
CoralFavia fragum
A compact Atlantic coral that fits anywhere and forgives beginner mistakes.
Gray Encrusting Anemone
CoralEpizoanthus arenaceus
A low-light Atlantic zoanthid with a quiet, encrusting presence in reef tanks.
Green Cactus Coral
CoralMadracis decactis
A compact Atlantic reef builder with distinctive ten-rayed polyps and rich green tones.
Green Clavularia
CoralClavularia viridis
A hardy, low-light soft coral that spreads cheerfully across rock and substrate.
Guinean Puffer
FishSphoeroides marmoratus
A hardy Atlantic puffer with a taste for crunching hard-shelled prey.
Halfmoon Angelfish
FishPomacanthus maculosus
A bold, large-growing angel that thrives where other reef fish fear to tread.
Halfmoon Butterflyfish
FishChaetodon lunula
A bold, raccoon-masked butterflyfish that prowls reefs after dark.
Hedge Carnation Coral
CoralGersemia fruticosa
A cold-water soft coral that brings polar ocean character to the specialty tank.
Hornwort
PlantCeratophyllum demersum
A fast-growing, nearly indestructible plant that thrives on neglect.
Horny Coral
CoralParagorgia arborea
A deep-sea giant with bubblegum-pink branches found across the world's cold oceans.
Humble Club Coral
CoralClavularia modesta
A low-maintenance soft coral that thrives where others struggle.
Indian Sea Star
InvertFromia indica
A vivid reef sea star that's more forgiving than most of its relatives.
Jewel Anemone
CoralCorynactis viridis
A not-quite-anemone that paints rocky walls in vivid clusters
Large Ivory Coral
CoralOculina varicosa
A shapeshifting ivory coral that adapts its entire lifestyle to available light.
Long-Spined Urchin
InvertDiadema setosum
A reef-grazing urchin with impressively long spines and a sharp sense of self-defense.
Many-spined Cowfish
FishLactoria diaphana
A boxy, horned oddity that roams reefs and mudflats across the entire Indo-Pacific.
Marbled Crayfish
InvertProcambarus virginalis
The only known parthenogenetic crayfish. Every individual is female and a perfect clone.
Marbled Goby
FishPomatoschistus marmoratus
A cryptic little sand-dweller from Europe's coasts, full of quiet personality.
Mediterranean Killifish
FishAphanius fasciatus
A rare Mediterranean killifish that rewards dedicated keepers with fascinating, constant activity.
Mediterranean Sea-fingers
CoralAlcyonium palmatum
A soft, finger-like Mediterranean coral that brings old-world reefs into your tank.
Molly Miller
FishScartella cristata
A tidepool blenny with a wild mohawk and an appetite for algae.
Northern Club Coral
CoralClavularia borealis
A cold-water soft coral that surprises with its tolerance for low-light tanks.
Northern Star Coral
CoralAstrangia poculata
A cold-water stony coral that thrives with or without symbiotic algae.
Ocular Coral
CoralMadrepora oculata
A deep-sea reef builder that occasionally ventures into aquarium-friendly depths.
Orange Ball Anemone
CoralPseudocorynactis caribbeorum
A nocturnal Caribbean predator with sticky orange-tipped tentacles that can snag small fish.
Orange Cup Coral
CoralTubastraea columnata
A bold, non-photosynthetic coral that rewards patient target feeders with vivid blooms.