Kerry or False Royal Tetra (Inpaichthys kerri) Gery Junk, 1977
Other names: Tetra Kerry, Violet Imperial Tetra.
South America: Aripuanán River, Upper Madeira River Basin, Mato Grosso, Brazil.
It mainly inhabits forest areas of slowly flowing tributaries of the main channel of the river.
The water in these biotopes is often brown in color due to tannins / tannins and other chemicals released from decaying organic materials, which is very acidic as a result.
Violet Imperial Tetra is painted in brilliant violet-blue color. Translucent ventral, anal and caudal fins are colored yellow, their dorsal fins are colored in different shades of red.
Males and females differ in color, the dorsal fin of the male is elongated, the fatty fin is blue. The remaining fins are transparent, but the pectoral and anal fins also have a shade of blue. The back is from light blue to purple.
A wide iridescent / iridescent dark blue band extends from the snout through the eye and to the caudal fin. Below the strip, the color is pale blue to the belly, where the color changes to beige.
The female also has an elongated dorsal fin, but the fatty fin is of a reddish hue. It has a wide black line instead of blue and the area above it is beige in color with silver-blue tint, in reflected light.
The belly is white and sometimes has a silvery sheen.
Now on sale appeared breeding form of tetra Kerry – Inpaichthys kerri “Super Blue”.
Maximum standard length 3.5 cm.
A small group of these fish will need an aquarium with a size of about 60 * 40 * 30 cm and a volume of 70 liters. Biotope aquarium organize very simple.
Use a river sand substrate and add a few snags, branches and twisted roots.
A few handfuls of dry leaves (beech or oak leaves can be used) will complete the creation of a natural look. Aquatic plants are not characteristic of natural waters in habitats.
Snags and leaves will stain the water in the color of weak tea, remove the old leaves and replace them every few weeks so that they do not contaminate the water while decomposing.
A small net bag filled with peat can be added to the filter or use peat concentrate to help simulate natural conditions — creating “black water.” Use pretty dim lighting.
An alternative biotope in which Inpaichthys kerri will feel great, this aquarium is densely planted with aquarium plants with free places for swimming.
Temperature: 24-27 ° C
Stiffness: 1-12 ° DGH
It is advisable to avoid alkaline conditions.
Kerry or False Royal Tetra is a small, peaceful type of aquarium fish that will not compete with more active / aggressive or larger aquarium neighbors. Ideally, they should be kept with other South American species, which may include small tetras, nanostomuses, wedges, Apistograms, or other dwarf cichlids and peaceful inhabitants of the bottom, such as corridors and ottsinkly.
It will also be good to coexist with small gourah, rasborami and peaceful barbs.
They have a slightly undeserved reputation as biting fins of fish. Although this kind of behavior has a tendency to keep them in insufficient quantities.
If a group with half a dozen is acquired, any aggression is usually limited within this bevy. And the larger / denser this pack is, the more certain these fish feel in it and the more interesting their behavior and brighter coloring.
No special requirements. Tetra Curry will take any ready-made dry food, they should also be offered on a regular basis small live and frozen food, such as Artemia, Daphnia and the like.
A varied diet will help provide better color and full development.
Females are much less colorful and have a more rounded body shape than males. In addition, they are predominantly red adipose fin, while in males it is blue.
Regularly bred in captivity. You need to take a separate aquarium as a spawn if you want to raise a decent amount of fry.
Something about 45 * 25 * 25 cm in size for a group of fish and a little smaller for a couple.
This container should be very dimly lit, since the eggs and juveniles of this species are sensitive to light. Add bunches of small-leaved plants, such as Java moss or artificial spawning sponges, to give the fish a place to lay their eggs.
Alternatively, you could close the base / bottom of the spawn with some kind of mesh. The mesh size should be large enough so that the eggs can pass through it, but small enough so that manufacturers cannot reach them.
Peat filtration is a useful addition as water will be used after reverse osmosis.
A small, low-bubbling air filter sponge is all that is necessary from a filtration point of view.
Water parameters in the spawning aquarium: Water should be soft and acidic in the range of pH 5.5-6.5, Gh 1-5, at a temperature of about 25-28 ° C.
Spawning can occur in a group, with half a dozen individuals of each sex, to be more productive.
Alternatively, spawning may occur in pairs. When using this method, groups of males and females are kept in separate aquariums. When the females noticeably spawn, and the males acquire a bright color, choose the best producers from them (fuller females and the brightest and most active males), and plant them in a spawning aquarium better in the evening.
They usually spawn the next morning.
In any case, producers eat spawn and should be removed immediately after spawning. The larvae hatch in 24-48 hours, the fry begin to swim freely in 3-4 days.
For the first few, usually 10-12 days, the infusoria is used as a starter feed, while the fry are not large enough to take nematodes or nauplii of artemia.
Lifespan Kerry (Inpaichthys kerri) 3-5 years, depending on the conditions of detention.
Quite a few different types of aquarium fish can be seen on sale with the same name, including the “royal” tetra. Palmeri or Royal tetra (Nematobrycon palmeri) is sometimes confused with Kerry or the false Royal tetra (Inpaichthys kerri), but they can be easily distinguished from each other, Kerry has a fat fin, while all Nematobrycon species do not have it.
The genus Inpaichthys is currently of the same type (it contains only one species), as well as some other fish associated with the family, such as the Hifessobrikon, its taxonomic status Incertae SEDIS, which means uncertainty. Therefore, it is possible that I. Kerri will be reclassified at some point in the future.