sturgeon info

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sturgeon info

Post by synodontisjack on Tue Oct 28, 2008 5:48 am

I have noticed a certain lack of information on these ]\/[onsters on the web so i thought it would be nice if i put my thoughts in.

here are a few profiles on the more common species:

sterlet (acipenser ruthenus)
This is one of the smaller sterlets reacing only 24"- 36" in captivity, it will also tollerate higher temperatures than its giant cousins anywhere up to 23 celcius should be ok but lower is prefferable, i have found sources stating these fish reach 30" in 10 years, however i have had these reach that size from little under a foot in around 2 years feeding on a diet of tetra sterlet sticks, shrimp, cockles and peas in a large outdoor pond. most coolwater non aggresive fish make good tankmates as long as they are not aggresive or large predators, also small sterlets should not be mixed with goldfish or carp as these steal food from small sterlet resulting in malnutrition.
A minimum sized tank/ pond should be no less than 12x6' with a depth of 3'. they should be ok through out winter as long as the pond does not freeze solid. ph is not overly important and anywhere between 5.5-7.5 should be fine.

siberian sturgeon (acipenser baerii)
This is one of the larger sturgeon seen for sale capable of reaching over 72" in the wild, however 48" should be accepted as a standard captive size. these fish grow quite fast at a steady rate of 1-2" per month feeding should be similiar to that of the sterlet. These are a large coolwater species not tollerating warm water for extended periods of time and anywhere where it gets higher than 25 celcius for over 2 weeks these should not be kept without a chiller. These guys are active and need a huge pond of 20x10 ft with a depth of 5 ft, smaller specemins may be kept in shallower ponds but the big guys need a big pond to avoid heat related deaths.
These are not predatory and can be kept with most coolwater fish with the exceptions of the large coldwater predators like wels cats. Again ph is not overly important and should be kept in conditions similar to that of the sterlet.

diamond sturgeon (acipenser gueldenstaedtii)
Reaching 2 or 8 foot in the wild this is a very large fish indeed but a 5 foot specemin is an exeptional fish with around 4 being average. This has a high growth rate almost equal to that of the beluga (2-3" per month). These need a pond of around the same size as baerii perhaps a little bigger. These are NOT tollerant of high temperatures what so ever and anything over 25 celcius is dangerous, extra airation is a must in the summer and a strong air pump is a must for all serious sturgeon keepers. Tankmates should be similar to that of ruthenus and baerii but these may prey on very small bottom dwellers under 4", they are very passive and not aggresive in the least. These enjoy a diet similar to baerii and ruthenus but with perhaps a bit more fish such as whitebait. Ph is again relitivley unimportant with between 5.5 and 7.5 being fine.

Shovelnose sturgeon (Scaphirhynchus platorynchus)
Smallest of the sturgeon species in North America, shovelnose sturgeon can tolerate high turbidities and are usually found in the strong currents of main river channels. They are often found over sand and gravel substrates feeding on aquatic insects, mussels, worms, and crustaceans. Spawning normally occurs from April through early July with mature shovelnose migrating upriver to spawn over rocky substrates in flowing water between l9-21 C. Individuals mature after 5 to 7 years of age, at approximately 500 mm and 630 mm (TL) for males and females, respectively. Their weight at this age ranges 0.9-1.3 kg (National Paddlefish and Sturgeon Steering Committee 1992). The largest recorded shovelnose was approximately 1062 mm (TL) and weighed 8.17 kg.

White sturgeon (acipenser transmontanus)
A very large coolwater sturgeon not tollerating temperatures above 15 celcius well at all. To keep these you need a very large pond/lake it must be very deep with plenty of shade for the fish to escape from the sun. This beast will easily reach 10ft perhaps more and will require a pond of over 40ft in length and 25 in width it will also need depths upwards of 6 feet again ph is not overly important with between 5.5 and 8 being fine. these grow realitivly slow, slower than siberians but a bit faster than sterlet, they appreciete a diet similar to the diamond again with more meaty foods. Most coolwater tankmates are suitable and adults may eat very small fish.

White sturgeon (acipenser transmontanus)
A very large coolwater sturgeon not tollerating temperatures above 15 celcius well at all. To keep these you need a very large pond/lake it must be very deep with plenty of shade for the fish to escape from the sun. This beast will easily reach 10ft perhaps more and will require a pond of over 40ft in length and 25 in width it will also need depths upwards of 6 feet again ph is not overly important with between 5.5 and 8 being fine. these grow realitivly slow, slower than siberians but a bit faster than sterlet, they appreciete a diet similar to the diamond again with more meaty foods. Most coolwater tankmates are suitable and adults may eat very small fish.

all sturgeon require high oxygen levels and the large species are greater effected.
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Re: sturgeon info

Post by Edieharper on Tue Oct 28, 2008 6:04 am

Great thread some really helpful info there great work
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Re: sturgeon info

Post by Oscar n redtail cat on Tue Oct 28, 2008 8:00 am

sounds good i had a sturgon once about 10" i think it was a dimond back one aswell Wink did no they got that bad lol Very Happy a monster then but the white :O lol
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Re: sturgeon info

Post by groovitudedude on Sun Nov 02, 2008 8:13 pm

Yeah, before anybody buys a sturgeon, it is vital that they do research. This goes for pretty much any fish, but especially for sturgeon and other difficult to keep fish.

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