Data sheet rudd
Latin name:
Scardinius erythrophthalmus
Trade name:
rudd
order name:
Common carp (Cypriniformes)
Family:
Whitefish (Leuciscidae)
Genus:
Scardinius
Origin:
Europe, Asia to the Caspian Sea and Aral Sea
Size (in cm:
20 to 30
pond size
Length and width (cm):
From 200
Content in litres:
from 1000
water values
Temperature:
4 to 25°C
pH:
7 to 8.5
CH:
soft to medium hard
behavior/stocking
Area:
upper area
Lining:
Omnivores, algae, aquatic plants (waterweed, milkweed, duckweed), live food (worms, insect larvae), goldfish food
Behave:
Schooling fish, peaceful
Number:
from 5 to 6 animals, optimally 10 to 15
Life expectancy:
up to 20 years
socialization:
Yes
Difficulty level:
Beginner fish Emőke Dénes, Hal – Scardinius erythrophthalmus – 2, CC BY-SA 4.0
General introduction
Common rudd, also known as false roach, red lead or sanguine persist in stagnant or slow-flowing water on. Here they feel in the flat bank area with a lot of vegetation particularly well. In summer they prefer reed edges or heavily overgrown areas.
Because of their large number of bones, the fish are of no importance as food fish.
Look
Their body is high-backed and flattened at the sides. The Belly edge is keeled between the pelvic fins and the anus. The front end of the dorsal fin lies behind the base of the pelvic fins.
Along the sidelines are found 40 to 43 round scaleswhich attract attention because of their size.The Mouth is superior and narrow.
Their upper side is brown-green to grey-green. The flanks shine gold or brass, the belly is silvery. Their eyes are yellowish or golden in color.
The dorsal and anal fins as well as the pelvic fins shine orange-red to red. They can be brown or gray at the base.
The fish only have the bright colors of their fins in clean, oxygen-rich water. If the water quality drops, the animals tolerate it, but the red fins then fade.
Behave
The fish are main active on warm summer days. In the morning hours and at dusk you can see the whole swarm collecting insects from the water surface.
They prefer to hide anxious and frightened Animals between dense plants. They react sensitively to disturbances. In winter they retreat to deep, ice-free areas.
Pond
The pond should have one sandy or otherwise soft soil have. He must shallow and deep areas have and lushly planted be. The animals like to stay in the flat zones. There they feed and place their spawn in the mating season. They need deep places to hibernate. There it should be approx. 140 cm deep.
Become as plants Underwater plants, reeds, rushes and grasses needed. Fine-leaved plants are severely affected. Plants with broad, leathery leaves are more resilient and will not be eaten as quickly. A floating island with plants out of the reach of voracious fish is ideal. The planting has to be renewed again and again.
Rudds need one strong filter and an air pump or a water feature.
danger and protection
Red feathers are protected in some federal states in Germany. She are considered endangered. There are hardly any genetically pure rudds left in the wild. They have similar spawning habits to roach, ahland and other whitefish. Therefore, there are frequent crossings.
In lakes where waterweed is rampant, rudd is used in a targeted manner. The animals destroy a large part of the plants that have become a plague. At the same time, new populations of the endangered species are emerging.
gender differences
The sexes can only be recognized in adult fish. And even then only during the mating season. The males get a clearly visible one spawning rash. The females have a rounded belly spawning approach to recognize.
breed
With 2 to 3 years the fish become sexually mature. cool winters and a rich feeding in the spring stimulate the readiness to spawn.
If the water temperature rises to 18 °C, the whole swarm goes in Densely overgrown, flat shore areas. Each female lays 100,000 to 200,000 sticky, reddish-yellow eggs. As detention spawner stick to the plants.
The eggs are about 1.5 mm in size. They need, so that the larvae can develop optimally, lots of oxygen. A powerful air pump is particularly important during this time. The adults do not care for the spawn or the offspring that have hatched.
After The larvae hatch in 3 to 10 days.
rearing
The little ones stick to the plants until their yolk sac is gone. Then they start eating plant foods.
socialization
Rudd can without problems with other peaceful pond fish to be socialized. Possible roommates are Tench, roach, orfe, goldfish, mustache.