Species Catalogue
140 species matching your filters — care guides, community photos, water parameters, and tank-mate compatibility.
hardCrystal Red Shrimp
Caridina cantonensis var. Crystal Red
hardGerman Blue Ram
Mikrogeophagus ramirezi
hardBlue Bolt Shrimp
Caridina cantonensis var. 'Blue Bolt'
hardDwarf 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.
hardRotala Blood Red
Rotala sp.
hardRotala Wallichii
Rotala wallichii
hardUtricularia Graminifolia
Utricularia graminifolia
Carnivorous aquatic plant used as a fine-leaved carpet alternative. Forms a delicate bright-green lawn. Requires CO2, high light, and soft water. Rewarding when established.
hardRotala Macrandra Mini
Rotala macrandra
Bicolor Angelfish
Centropyge bicolor
Fire Eel
Mastacembelus erythrotaenia
Fissidens Nobilis
Fissidens nobilis
Madagascar Lace Plant
Aponogeton madagascariensis
Nesaea Golden
Nesaea pedicellata 'Golden'
Rotala Macrandra
Rotala macrandra
Zebra Pleco
Hypancistrus zebra
Achilles Tang
Acanthurus achilles
Adonis Pleco
Acanthicus adonis
African Fan Shrimp
Desmocaris trispinosa
Alternanthera Reineckii Pink
Alternanthera reineckii Pink
Alternanthera Reineckii Purple
Alternanthera reineckii Purple
Altum Angelfish
Pterophyllum altum
Ammannia Pedicellata
Ammannia pedicellata
Arrowhead Puffer
Pao suvattii
Auratus Cichlid
Melanochromis auratus
Barclaya Peryana
Barclaya peryana
Bee Shrimp
Caridina cantonensis
Black Beard Algae
Audouinella sp.
Dense, dark grey-to-black tufts that cling stubbornly to plants, hardscape, and equipment. One of the most frustrating nuisance algaes for planted tank keepers. Caused by CO₂ fluctuation and low or inconsistent carbon dioxide levels. Spot-treat with liquid carbon (Excel) or hydrogen peroxide.
Black Ghost Knifefish
Apteronotus albifrons
Blanket Weed
Cladophora glomerata
Dense, rough-textured mats of dark green filaments that blanket pond plants and surfaces. Common in outdoor ponds and highly nutrient-rich tanks. More coarse and branched than soft hair algae. Difficult to eradicate fully — physically remove as much as possible before treating with algaecide or reducing nutrients aggressively.
Blue Bolt Pinto Shrimp
Caridina logemanni
Blue Diamond Discus
Symphysodon sp.
Blue King Kong Shrimp
Caridina logemanni
Blue Leg Poso Prawn
Macrobrachium latidactylus
Blue Pincher Macro
Macrobrachium vollenhovenii
Blue Tiger Shrimp
Caridina cf. cantonensis 'Blue Tiger'
Blue-Green Algae (Freshwater)
Cyanobacteria spp.
A blue-green or red-brown slime that coats the substrate, plants, and glass with a slimy, foul-smelling mat. Technically a bacterium, not true algae. Caused by low nitrates, poor flow, and organic waste. Responds to a 3-day blackout combined with the antibiotic erythromycin or hydrogen peroxide treatment.