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Giant danios are also used as dither fish in South and Central American cichlid aquariums. The larger cichlids chase and defend their territories against the giant danios, which allows the cichlids to exhibit more natural behavior. As egg-scatterers, danios produce around 300 eggs in a single spawning. They spawn in clumps of plants.
Suitable ones include giant danios, large tetras, most smaller catfishes, and even some of the less aggressive cichlids, such as firemouth cichlids. Slow-moving or long-finned fish such as fancy goldfish and freshwater angelfish are likely to be attacked by males; bettas and gouramis may also be victimized due to their resemblance to paradise fish.
Convict cichlids usually demonstrate their aggressive behavior by biting and chasing, which entails bursts of high speed targeted at the intruder, and also show their aggression via their body size. [48] It has been shown that environmental parameters like changes in temperature and prior residence may affect the cichlid's territorial aggression.
Dither fish are typically fish that swim around the top of a tank, a behavior that reassures more timid fish that no predators are nearby, and are found naturally in the same habitat as the other fish in the aquarium, thereby encouraging them to relax and engage in normal behavior.
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Aggressive syndrome is a social condition describing an individual's need to show his distaste or dislike against certain individuals. Adult female fish usually gather in groups, including adult females and non-reproductive males. Aggressive behavior is displayed in females especially when the female fish attack each other directly.
Barred danio: Devario pathirana: 6 cm (2.4 in) Celestial Pearl danio: Danio margaritatus: 2 cm (0.79 in) Emerald dwarf danio: Danio erythromicron: 2 cm (0.79 in) Fireline devario: Devario sondhii: 4.5 cm (1.8 in) Giant danio: Devario aequipinnatus: 15 cm (5.9 in) Lake Inle Danio: Devario auropurpureus: 8 cm (3.1 in) Glowlight danio: Danio ...
The species remaining in the genus Danio comprise most of the danionins familiar to aquarists. They have two pairs of long barbels and are generally characterised by horizontal stripes (with the exception of the Panther Danio, Glowlight Danio and Black Barred Danio which have vertical bars.