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110 results for “water hardness”
Red Cross Fish
The Red Cross Fish, also known as the Cross Fish or Red Cross Fish, gets its name from its red fins and the black cross pattern at the base of the caudal fin. This fish, native to Argentina, has a habit of attacking small fish, so it should not be kept with small species in a community tank.
Heckel Discus
The Heckel Discus is often confused with the common Discus, and is very rare in the market and very expensive. Because it is difficult to keep, it is suitable for experienced aquarists.
Blackspot Barb
The Blackspot Barb is mainly distributed in southern Asia—India, Sri Lanka, and Myanmar—and is named for the large black spot on its caudal peduncle, its main distinguishing feature. It is omnivorous and easy to keep.
Cockatoo Dwarf Cichlid
The Cockatoo Dwarf Cichlid (Apistogramma cacatuoides) was found in Brazil in 1951 and has been heavily line-bred since. A relatively easy but shape-sensitive dwarf cichlid from the Colombian Amazon, males reach 8 cm with tall fins and orange-red spots. It likes soft acidic water and live foods.
Upside-Down Catfish
The Upside-Down Catfish is a tropical catfish from Central Africa's Congo River that, true to its name, swims and rests belly-up. Split into river and lake types, it is gentle, reaches 9-10 cm, and prefers soft water at 22-26°C.
Six-Banded Distichodus
The Six-Banded Distichodus (Distichodus sexfasciatus) is a Congo native named for its six black bands, though its 'short nose' is only relative to the long-nosed distichodus. Its body edge shows blue fluorescence under light. It reaches 30 cm, is robust but short-tempered, and needs a large tank.
Neon Rainbowfish
The Neon Rainbowfish (Melanotaenia trifasciata) is a small, peaceful tropical fish whose red-edged body glows like a blue ghost under light. It prefers hard, slightly alkaline water at 22-26°C and mixes well with other small fish.
Glass Catfish
The Glass Catfish (Kryptopterus bicirrhis) is named for its fully transparent body and the two cat-like barbels at its mouth. It swims swiftly and, when resting, holds a 40-degree upward tilt, sometimes shimmering with rainbow colors under the right light. A peaceful schooling fish, it needs soft acidic water and is best kept with companions of its own kind.
Leopard Danio
The Leopard Danio is native to Southeast Asia and is prized for its vivid leopard-like coloration, making it a favorite among tropical fish keepers. Hardy and easy to care for, it is an excellent choice for beginners. A peaceful, active schooling fish, it reaches about 3-5 cm and accepts a wide range of foods.
Banded-Tail Nanochromis
The Banded-Tail Nanochromis (Nanachromis caudifasciatus) is a relatively large, peaceful cichlid native to the southern river basins of Cameroon, making it a manageable species for aquarists. Males can be aggressive toward one another, so careful acclimation is needed to prevent fighting. Hardy and easy to keep, it readily breeds in the home aquarium.