In contrast to smokey angelfish, halfback angelfish have a dark black hue in the back half of the fish with a distinct border. Two recessive half-black genes are also present in this phenotype, which makes them rather uncommon.
The albino angelfish has a white body with translucent fins, red eyes, and occasionally a very slight orange color on its top body. This colorless phenotype is the outcome of two recessive albino genes being present.
A gold or yellow upper body typically on their head contrasts with the main body's mixture of black and white coloring on gold marble angelfish. In certain cases, the entire body exhibits this gold/orange patterning. They are among the most popular angelfish on the market and come in a wide variety.
Koi angelfish and gold marble angelfish are two phenotypes that have comparable appearances. The distinctive distinction between the two is that only the top of the body, the area around the dorsal fin, and the top of the head are frequently orange on the gold marble angelfish, but the koi angelfish will display more orange across their entire body.
Due to their similar features, silver angelfish and zebra lace angelfish are sometimes mistaken for one another. The zebra angelfish has one or two additional black vertical stripes, whereas a silver angelfish has four vertical stripes.
Both the zebra and the stripeless genes are present in equal amounts in clown angelfish. This phenotype has white and silver undertones with inconsistent patches of black stripes and dots throughout their entire body.
Since most species of fish inhabit the lower and middle levels of the aquarium, aquarists looking for a distinctively shaped fish to incorporate into a community tank with other fish of similar size and temperament will like the black-winged hatchetfish.
The golden empire gudgeon is one of around 11 species in the most widely distributed genus found in Australia, Hypseleotris. Their present family, the Gobiiformes, was previously a suborder of the Perciformes, which once contained 2,211 species but has since been divided into seven families.
The empire gudgeon is one of around 11 species in the most widely distributed genus found in Australia, Hypseleotris. Their present family, the Gobiiformes, was previously a suborder of the Perciformes, which once contained 2,211 species but has since been divided into seven families.
Within the Cichlidae family, Apistogramma is the most species-rich genus, which explains why they are also the most popular in the aquarium hobby. Due to their vibrant colors, Apistogramma like the gold agassiz’s dwarf cichlid has been highly sought after.
Within the Cichlidae family, Apistogramma is the most species-rich genus, which explains why they are also the most popular in the aquarium hobby. Due to their vibrant colors, Apistogramma like the fire red agassiz’s dwarf cichlid has been highly sought after.
Within the Cichlidae family, Apistogramma is the most species-rich genus, which explains why they are also the most popular in the aquarium hobby. Due to their vibrant colors, Apistogramma like the agassiz's dwarf cichlid has been highly sought after.
Since their introduction in the early 1900s, the golden harlequin rasbora has become the most common species of rasbora kept within the aquarium hobby. Their scientific name Heteromorpha actually refers to its rather distinctive color pattern, which is undoubtedly the reason this species gained so much popularity.
Since their introduction in the early 1900s, the black harlequin rasbora has become the most common species of rasbora kept within the aquarium hobby. Their scientific name Heteromorpha actually refers to its rather distinctive color pattern, which is undoubtedly the reason this species gained so much popularity.
