Blue Dot Perch

The following article deals with the breed of the blue spotted perch. In Germany they are mainly kept in aquaria, but they are native to South America. There are further occurrences in Central America. The chapters provide information on their appearance, their natural habitat and the species-specific characteristics.

What distinguishes Blue Dot Perch

The blue color that gives a baaaeries its name is typical for the species. They live in different types of waters, both in rivers and lakes. Their race is classified in the group of cichlids and perch-like species.

The appearance of blue spotted perch

Adult Blue Dot Perches grow to a maximum of 16 centimetres, provided they belong to the male sex. Apart from the blue colour gradient, the perches look slightly greenish, with dark blue stripes on their sides. On the head there are also stripe-like grooves, which are however lighter in colour. From the coloration they appear bluish.

  • Maximum size for male perch: 16 cm
  • Blue-green colored body, flattens on the sides up to the caudal fin
  • Elevation at the dorsal fin
  • Stripes on the sides and on the head

Housing conditions

An aquarium with a capacity of at least 200 litres is required for species-appropriate keeping. The fish must be able to swim freely in it. Blue spotted perch are used to warm waters. Therefore the water in the aquarium should be tempered to about 25 degrees.

Outside the breeding season cichlids behave peacefully in groups. During this phase, they keep other conspecifics away from them and are often aggressive. In principle, however, they are suitable for keeping in groups, for example with barbel or tetra breeds.

  • Aquarium should be able to hold at least 200 litres of water
  • Warm water temperature of about 25 degrees Celsius
  • Bluefish are generally peaceful, during the breeding season rather defensive
  • However, keeping in groups is possible
  • Characins and barbels can live together with blue spotted bass in one aquarium without any problems

Gender differences

The main difference between the sexes is their size. At up to 16 centimetres, male perches become longer than female ones. Furthermore, males turn blue during sexual maturity. Females, on the other hand, do not have such intense colours and have shorter fins.

  • Larger males (max. 16 cm), smaller females
  • Yellowish colouring of male fish during sexual maturity
  • Female perch -> less bright colours, smaller fins

Water values for blue spotted bass

An average water temperature of 18 to 25 degrees is ideal for blue spotted bass. The pH value should be between 6 and 7.8. With regard to water hardness there are no further recommendations for perch.

Food and nutrition for Bluefish

Blue spotted perch can be fed food in wet and dry conditions. They also eat live food. Hatched fish are additionally given vitamin-rich food. After fourteen days they receive the same food as their mature conspecifics.

The ideal aquarium for blue spotted perch

Bluefish tend to seek hiding places in their environment. Accordingly, the aquarium should be equipped with artificially created bays, tree roots and caves. Coarse gravel sand is scattered on the bottom. Resistant plants are suitable for planting. Filigree plants are in turn damaged by the fish.

The aquarium must have enough space. This allows the cichlids to avoid each other when swimming. During the week, one third of the water is replaced by fresh water. In this way diseases of the animals can be prevented.

Special features of blue spotted perch

In Germany, the blue spotted perch has been known as an ornamental fish since the beginning of the last century. With a maximum age of 18 years, blue spotted perch are considered to be long-lived.

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