Species Catalogue
1,492 species — care guides, community photos, water parameters, and tank-mate compatibility.
Didiplis Diandra
Didiplis diandra
Dinoflagellates
Symbiodinium spp.
Brown, stringy, bubble-filled slime that often appears in new reef tanks — frequently mistaken for cyanobacteria. Dinoflagellates ('dinos') form slimy mats that can smother corals and sandbed. Treatment is complex: raise nitrates (>2 ppm), raise phosphates (>0.05 ppm), run extended dark periods, and increase UV sterilisation. One of the most frustrating reef nuisances.
Discus
Symphysodon spp.
Disk Tetra
Myleus schomburgkii
Doctor Fish
Garra rufa
Dog Face Puffer
Arothron nigropunctatus
Dojo Loach
Misgurnus anguillicaudatus
Domino Damsel
Dascyllus trimaculatus
Double Red Cockatoo Dwarf Cichlid
Apistogramma cacatuoides
Double Tail Betta
Betta splendens 'Double Tail'
Dovii Cichlid
Parachromis dovii
Dragon Guppy
Poecilia reticulata
Dragon's Tongue
Halymenia sp.
Brilliant scarlet-red, blade-shaped macroalgae — one of the most visually striking species for display refugia. Provides excellent colour contrast and nutrient export. More delicate than Chaeto; requires moderate flow and consistent light. Popular with collectors and stunning under reef lighting.
Duboisi Cichlid
Tropheus duboisi
Duckweed
Lemna minor
Dumbo Ear Guppy
Poecilia reticulata
Duncan Coral
Duncanopsammia axifuga
Dwarf Anchor Catfish
Hara jerdoni
Dwarf Baby Tears
Hemianthus callitrichoides
The smallest aquarium plant in the world, native to Cuba. Forms a dense bright green carpet highly prized in Nature Aquariums and iwagumi layouts. Requires high light, CO₂ injection, and a nutrient-rich substrate to thrive.
Dwarf Blue Crayfish
Cambarellus diminutus
Dwarf Chain Sword
Helanthium tenellum
Dwarf Gourami
Trichogaster lalius
Dwarf Hairgrass Mini
Eleocharis pusilla
Dwarf Mexican Brown Crayfish
Cambarellus montezumae
Dwarf Neon Rainbowfish
Melanotaenia praecox
Dwarf Pencilfish
Nannostomus marginatus
Dwarf Red Lily
Nymphaea rubra
Dwarf Water Lettuce
Pistia stratiotes 'Dwarf'
Eastern Rainbowfish
Melanotaenia splendida
Echinodorus Aflame
Echinodorus sp. 'Aflame'
Echinodorus Bleheri
Echinodorus bleheri
Echinodorus Kleiner Bar
Echinodorus Kleiner Bar
Echinodorus Oriental
Echinodorus Oriental
Echinodorus Ozelot
Echinodorus 'Ozelot'
Echinodorus Radicans
Echinodorus cordifolius
Echinodorus Reni
Echinodorus sp. 'Reni'