#sterlet

[merosmenagerie]

Got really excited that my koi guy told me I could get a Sterlet if I wanted one without ruining his carefully calculated biolad of our massive koi pond.

Anyway this is Sharky the White Tip Sterlet and I will never see him again because he went straight for the 6ft+ deep bottom of the pond and he lives there now

I'm still having an Experience over the fact you can own a Sturgeon. Just buy one. Straight up. One of the oldest bony fish on the planet. In your local garden centre.

[sturgeonposting]

spill the tea on the bester sturgeon when u figure it out pwease

I have done a bit of research

The Bester sturgeon is a hybridization of the beluga sturgeon (H. huso) and the sterlet (A. ruthenus (H. ruthenus now because of the reclass)) bred for the caviar of the beluga with the rapid sexual maturity and even tempering of the sterlet.

The cross was first achieved in 1952 and now it’s the most popular sturgeon hybrid. And, because these two fish are both in the diploid group (they have the same number of chromosomes), their hybrid offspring are fertile and can even be further hybridized.

So cool to see what basically looks like a beluga model with sterlet reskin. The coloration is reported to vary from the cool grey of the beluga to the warm browns of the sterlet.

Also, if you were wondering, they do it with a tiny man and a big mama.

Bester is one of the most successful results of crossing two species of fish of the sturgeon family. The "parents" of this hybrid were belug

http://www.sturgeon-web.co.uk/sturgeon-hybrids

[i-give-you-a-fish]

Could you give me a fish native to russia, I want at least one good thing about my country

You get a Sterlet

Acipenser ruthenus

[pokmajom]

Borízű olvasói levél, tokhal ügyekben.

Majdnem jól mondta UP a tokhalas sztorit, mert abban például igaza volt, hogy a minimum 3-4 évig az ikrájukért tartott halaknak, magas életszínvonalat kell biztosítani, hogy minél több kaviárt termeljenek és nehogy megbetegedjenek. Ehhez valóban átfolyó vízen tartják őket, vagy olyan rendszerekben, ahol a halakról elfolyó vizet megtisztítják és visszavezetik a medencékbe. Viszont a megvilágítás időtartamával, sajnos nem lehet előrébb hozni az ivarérést és így a kaviár termelést, csak a már ivarérett egyedek ikratermelését lehet kicsit finomhangolni. De ezt is inkább más fajoknál, ott alkalmazzák, ahol az ikrából halat keltetnek és folyamatosan kell a szaporító anyagot biztosítani.

A nálunk, kaviár termelési célból tartott tokhalak közül a vágótok kb 7 év, a kecsege kb 5 év a lénai tok pedig kb 6 év alatt éri el az ivarérettséget, mesterséges körülmények között tartva. A legértékesebb kaviár persze még mindig a vizáé, de ez az optimális körülmények közt is csak kb 16 év alatt lesz ivarérett, amit csak nagyon kevés termelő vállal be. Vadon fogni és az ikrát feldolgozni, természetesen csak illegálisan lehet, mert világszerte szigorúan védett. Magyarországon időnként telepítik, de ezek az egyedek a Vaskapu vízlépcső miatt, csak lefelé tudnak vándorolni, vissza viza már nem jön.

A tokhal filé nagyon finom, szálkátlan (merthogy ősi porcos halak) és néha lehet venni a Lidl-ben. Az egyik hazai termelője a kisbajcsi Bajcshal, az ő mintaboltjaikban lehet venni tokhal termékeket, így például a Garai téri mintaboltjukban is.

[leaf-thief]

sterlet (Acipenser ruthenus) wet specimen with illness (Cystoopsis acipenseri) (seen as cysts at the abdomen)

Sofia University

[thesignpainty]

Her little Minnow 💕

[vintagewildlife]

Sterlet (Acipenser ruthenus) By: Albert Visage From: Éditions Rencontre Cards 1978

[aquariuminfobureau]

Sterlet (Acipenser ruthenus) are still sold for ponds, where they tend to be misfed, as though they shared the diet of koi and goldfish. As carnivores, they certainly do not, requiring foods that supply large amounts of protein, and fish oil. The sterlet and it's surgeon kin, cannot digest plant material, so they require foods based on aquatic animal proteins, as sold for predatory aquarium fishes. As predators with a high metabolism, they require 2-3% of their own body weight each day, though less when they are more dormant in the cold season. Sterlets are benthic feeders on insect larvae, amphipods, and the like, equipped with underslung mouths adding to their shark-like appearance. Thus food provided to these sturgeon will be eaten from the bottom, and should be of a sinking nature.

Adult sterlet can grow to around 90 to 125 centimeters, or 36 to 50 inches long, but a more typical length would be 40 centimeters or 16 inches. This species are active bottom rovers, requiring an aquarium or pond that is at least six times by four times their own total length. Although they are thus too huge for most aquariums, they are considered a small sturgeon species, as the largest sturgeon weigh in excess of a metric ton. Sturgeons have no close living relatives excepting the paddlefishes, which share their superficial similarity to sharks, not least because of the structure of their tails. In fact this asymmetrical tail morphology - upkinked and sporting the caudal fin underneath - was seen in the most recent, Palaeozoic common ancestor of the sharks and true finfishes.

Sturgeon and paddlefishes are an ancient sister branch to the mainline of finfish evolution, lacking many of the traits that are common to typical fishes known as teleosts, and retaining anatomical curiosities as are seen in ancient fossils. One peculiarity of sturgeons is their impressive bony plates. These can be sharp to touch, especially in younger sturgeon, and have obviously evolved as armor to protect them from predators. As a group, the sturgeons are famous for migrating between their freshwater spawning grounds and the sea, but not all species make such journeys, and even among the those that do so, may exist landlocked breeding populations, which inhabit freshwater year round.

Riverine A. ruthenus is among those species that is never found in the sea, although it is known to migrate downriver to overwinter, before returning upstream in spring to spawn on gravel beds. They do not seem to spawn on softer substrates. Wild A. ruthenus are inhabitants of temperate, alkaline freshwaters, more specifically large rivers and their tributaries, from the drainages of the Danube to the Yenesei. Data on their water temperature tolerances is inconsistent in the scientific literature. One source says that their optimal ambient temperature, is 13 to 16 centigrade, and the seasonal rise of temperature to 13 degrees triggers their spawning. But another says their growth is optimal, at 18 to 22 degrees.

The latter is, in my experience, quite correct for their welfare. All the same, sterlets are a coldwater, and certainly not a tropical species, and in winter the water temperature may be slowed to drop down to 4 degrees. Sterlets like open swimming space without excessive planting, or other obstructions to their path whilst they are roving over the substrate. As carnivores they might well consume small fish, but they are clearly harmless to mature sized koi and the like, and they are usually bought at a small size, to share outdoor ponds with ornamental strains of carp and goldfish. Unfortunately they happen to be intolerant of common pond medications that are safe for cyprinids, such as those containing formalin/formaldehyde, potassium permanganate, or copper sulfate.