Pseudoplatystoma x Doradid hybrid, adult

[Viktor Jarikov]

http://www.planetcatfish.com/common/spe ... es_id=2044

If you are a member on MFK, you can check out the photos of this rare hybrid (sub-adult/adult?) here: http://www.monsterfishkeepers.com/forum ... -ID-Hybrid

[Redtailrob]

Hi Viktor, No I did see this one too but didnt want to comment as i think its an ugly looking fish! Just doesn't sit well with me. Then again who am I to judge what is a good looking Hybrid & what isnt??
It totally unerstand & can agree with Hybridization of fish for food/consumer purposes but feel uncomfortable with Hybridization just for Aquarists benefit. Again being Hypocrytical here as I own a Large RTC x TSN cross which Im very fond of.

[Viktor Jarikov]

Yeah, it has a Frankenstein look to some one who has seen many TSNs and Doradidae and paid attention. As you saw, it has plenty of admirers too I've never seen any even on photos apart from that baby in Cat-eLog. So, I thought of pointing it out as something rare.

[Suckermouth]

Assuming this was made for food, I'd guess the doradid is Oxydoras...

[Viktor Jarikov]

Certainly a valid guess. Could you see the pics Milton?

[Suckermouth]

Yes, although I'm not an MFK member. Although, perhaps it's just me, I don't clearly see lateral spines or plates on the MFK fish.

[Viktor Jarikov]

Right. The Amiidae's baby has them. Maybe they are lost later on or maybe my guess of an ID is wrong - I'd not be surprised one bit. Challenge is always welcome.

[Redtailrob]

I think your ID assumption is correct Viktor.
I would assume that the spines are lost as a result of Hybridization perhaps?

[Viktor Jarikov]

Here is a pic of another baby in the OP. http://www.monsterfishkeepers.com/forum ... 484276-I-d

[sequoiacat]

That's a beautiful hybrid. I would love to be invovled in the hybrid creation process, it would be awesome to learn the techniques used and the science used.

[Bas Pels]

Personally I dislike the fishes.

Remember, they are made by triggering males and females of the parent species with injected hormones. Sometimes the fish require multiple injections, made from pituaries from other fishes.

After a certain period, the eggs and sperm is taken from the parents, which in many occasions don't survive the procedure and then both samples are mixed.

The thusly fertilized eggs are hatched, and the resulting fry is raised

Nothing very exciting, or high tech. Somebody who is generally good with fishes could learn it all in a week.

The advantage of hybrids is, they don't reproduce. This results in no energy wasted on fighting to mate, and eventual escapees will not influence the natural stock too much

Further, hybrids tend to grow bigger than the parents, which is for food fish also an advantage

But for keeping them in a tank? This is a disadvantage. A 60 cm (2 feet) fish is generally far too big for a private tank. I got a 4 meter * 1 meter (that is over 13 feet * 3 feet) tank in my livingroom, and I would include this - many would say monstertank - in the definition of a normal private tank

One would need a swimming pool for them.

I think we better stick to fishes not much bigger than a foot and a half. max

[johnnyev]

Personally i have no time for hybrids of any species, no matter how good they look. The fact that they are hybrid is enough to put me off.

[Viktor Jarikov]

Another photo mid-page 1: http://www.monsterfishkeepers.com/forum ... ybrid-cats

and mid-page 7.

[Viktor Jarikov]

Another one. Photo and some info, page 5: http://www.monsterfishkeepers.com/forum ... fish/page5

[Viktor Jarikov]

Amiidae's juvies: http://www.planetcatfish.com/forum/view ... 35#p276759

[Rodger]

I hate to admit that it is an attractive cat. I am a "purist" and don't like the idea of any hybrid that isn't from natural hybridization. I am, of course, referring to wild hybridization not captive mutts.