Species Catalogue
1,492 species — care guides, community photos, water parameters, and tank-mate compatibility.
Cryptocoryne Scurrilis
Cryptocoryne scurrilis
Cryptocoryne Spiralis
Cryptocoryne spiralis
Cryptocoryne Undulata
Cryptocoryne undulata
Cryptocoryne Usteriana
Cryptocoryne usteriana
Cryptocoryne Walkeri
Cryptocoryne walkeri
Cryptocoryne Wendtii
Cryptocoryne wendtii
Cryptocoryne Wendtii Bronze
Cryptocoryne wendtii Bronze
Cryptocoryne Wendtii Brown
Cryptocoryne wendtii 'Brown'
Cryptocoryne Wendtii Green
Cryptocoryne wendtii 'Green'
Cryptocoryne Wendtii Mi Oya
Cryptocoryne wendtii 'Mi Oya'
Cryptocoryne Wendtii Red
Cryptocoryne wendtii 'Red'
Cryptocoryne Wendtii Tropica
Cryptocoryne wendtii 'Tropica'
Crystal Black Shrimp
Caridina cantonensis 'Crystal Black'
Cuban Rivulus
Rivulus cylindraceus
Cuming's Barb
Puntius cumingii
Cup Coral
Turbinaria reniformis
Cuphea Anagalloidea
Cuphea anagalloidea
Cylindricus Cichlid
Neolamprologus cylindricus
Cyperus Helferi
Cyperus helferi
Daffodil Cichlid
Neolamprologus pulcher
Dageti Killifish
Epiplatys dageti
Dalmatian Platy
Xiphophorus maculatus
Dalmatian Sailfin Molly
Poecilia latipinna
Darter Tetra
Characidium fasciatum
David Sands' Corydoras
Corydoras davidsandsi
Day's Paradise Fish
Pseudosphromenus dayi
Delhezi Bichir
Polypterus delhezi
Delphax Corydoras
Corydoras delphax
Demasoni Cichlid
Pseudotropheus demasoni
Denison Barb
Sahyadria denisonii
Derbesia
Derbesia sp.
Fine, fluffy dark green tufts that resemble a softer version of Bryopsis. Often appears in high-nutrient systems and around powerhead intakes. Like Bryopsis it is resistant to most herbivores. Sea hares will consume it; magnesium treatment (1500–1800 ppm) is effective. Reducing phosphate below 0.05 ppm also helps.
Desert Goby
Chlamydogobius eremius
Diamond Tetra
Moenkhausia pittieri
Diamond Watchman Goby
Valenciennea puellaris
Diatoms (Brown Algae)
Bacillariophyceae spp.
Brown, dusty coating on glass, substrate, and decorations — the most common algae in newly set-up tanks. Feeds on silicates from tap water and substrate. Almost always disappears on its own within 6–8 weeks once silicates are depleted. Otocinclus catfish and nerites clean it rapidly.
Dictyota
Dictyota sp.
Flat, iridescent brown-olive blades that spread over rockwork and corals. Beautiful under certain lighting — shimmers blue-green — but highly invasive in reef tanks. Produces chemical deterrents that most fish avoid. Very difficult to eliminate; manual removal stimulates regrowth. Sea urchins (Diadema) and Thalassoma wrasses occasionally graze it.