What can we expect when you cross breed this two goldfish?





Will we have a goldfish with bubble eye, crown on its head, pearlscale and a dorsal fin? That is to say a crown pearlscale with bubble eyes.

What do you guys think?

WEll, the Bubble-eye characteristic, in MOST bubble eye fish, is a fairly simple Mendalian selection - the bubble being recessive. A homozygous fish with the bubble eye trait will be a bubble eye. A Heterozygous fish - one non- bubble and one bubble gene - usually does nt demonstrate any bubbles. SOME fish - with a slightly different trait, can express a "partial" bubble...... or "frog-eye" trait.

Pearlscales are also quite "Mendalian" - one of the other few in goldfish genetics. The pearlscale is about as far out there on the "mutant" scale as you can get. Pearls can be slightly incompletely expressed - the reason why you will get fish with nice, big, round pearls and ones with "flatter" pearls or pearls that are only on parts of the body - but mostly they are recessive. So if you cross a pearlscaled fish with a non-pearlscaled fish, you will not see any pearls expressed on the offspring.

The "wen" is a far more complicated type to guess. REsearch, so far, seems to indicate that the development of the head growth is an incompletely dominant trait. This means that if you have a fish with a head growth, the majority of the offspring will, most likely, have some sort of head growth. The headgrowth may or may not be the same as the parents - it can vary from excessive all the way down to barely there. With the high-hat type seen in the crown pearlscale and NONE in the bubble eye, I would guess that you might see some "bubbling" or thickening of the head - maybe a few might express a wen of some nature.

Dorsal fins are almost always dominant - but do have some incomplete penetration in many spawnings. You should get the majority of the fish having dorsal fins - but some may be rudimentary or misformed.

Body shape is a tough one to predict, for sooooo much can be environmentally manipulated. Deep or shallow water, protien or carbohydrates, temperatures can all affect the body shape. Interestingly enough, though - the body type of the pearlscale actually seems to be one of the most dominant traits recognised in the fish. The deep, roundish body is far more dominant than the elongated body of the bubble eye. It is often only partially expressed - but the offspring should demonstrate deeper/rounder bodies than the Bubble eye parent.

So - you should get a mix of rounder bodied fish, with dorsal fins and possibly some eye protrudance and some thickening of the head - possibly with a recognizable "wen" on a few. Since both fish appear to be matt scaled, you should see a mix of matt, metallic and nacreous, with, (depending on the gentic makeup of the red/white) about 1/4 being soft-gilled pinkies and calicos.

JMO

So! Should I give it a shot?

You realize that with any "mismatched" set of parents (even ones that are the same breed - but from dramatically different lines) you are going to get a whole slew of non-viable babies. It is very difficult to tell you exactly what you will get in the end- for many will die.... only the strongest will survive.

I, personally, would not breed these two together. Pearlscales tend to be the "most mutated" of the commonly recognised goldfish breeds - and carry many "less than" genes - genes that can weaken or kill large numbers of offspring. The Bubble Eye is pretty far down the line of "mutations" - and also, is not a particularly "strong" breed of fish. You are setting yourself up for a difficult set of fry to raise successfully.

Keep in mind, also, that to get a viable, reasonably pretty, healthy baby, you will need to raise a fair number - and that takes space. You will have to cull - something that many find difficult - and, if you end up with excess fry, you will not be able to sell them to any store - for a cross bred fish is not a saleable commodity.

I think, if you are interested in breeding goldfish, you would have a much more successful and pleasant experience if you were to breed two good examples of a specific breed - preferably ones that come from a single genetic line. The offspring will be a much more homogeneous group - with a much greater chance at success, attractive offspring, less die-off, less culling needed, and a chance to sell the extra fry - instead of destroying them.

The saying goes - (WIth WELL MATCHED parents) that you will get 1 in 100 that is worth growing out, but less than 1 in 1000 that will be show quality. Of those show quality ones - only one in 100 of them may be a show winner..... Breeding goldfish is an exersise in patience, luck, and a whooooole lotta work.

What sort of material is in the "bubble" of these kinds of fish? That is, is the bubble merely a thin layer of flesh filled with a liquid (water, blood, plasma) like a baloon, or is it filled with a fleshy component, like a tumor or wen?

Oliver

man I already dont like pearls, and mixing a cute bubble eye with them this is going to be strange.

The material in a Bubble eye fish's bubble can be likened to jello - about that consistancy. At times,with various injuries or diseases it can be looser or more firm.

The bubbles can deflate if they are torn - but will not often "pop". Once deflated, they can reinflate as the fish heals, but usually you will see a darker inclusion in the bubble - an unattractive addition - and often the bubbles no longer will be symetrical.

Koko's personal nightmare......a seemingly dropsied bubble eye with a strange fat body and weired scales, eh?

one of our lfs almost always has crossbred goldies! They had some insane mutations!!!! But still cute.

Oh man you just hit the nightmare on the head Daryl oh no dont do it

I just remember! I have 3 pieces of this variety another batch of parents. All three have the shape of a crown pearl and also the bubble sag. The sag is still very small and I am not certain if it will grow big or the crown will grow.

Here is what I was talking about and the pictures of this "New breed" from crown pearlscale mother with bubble eye father. I totally forgotton about these 3 fella as they were kept in my sump tank to eat off any uneaten food that gets into the sump tank.

Not sure of their sex.


Happy together.


Close-up of the tiny bubble developing.

you would most likely end up with what you have there, but maby with a wen

They will most likely be frog-eye pearlscale.

That is going to be cool looking

are you planning to sell them?

I haven’t been able to look at “fancy” goldfish the same way since I found out they’re the product of selectively breeding genetic deformities in goldfish Although i still have a hard time not staring in aww of "fancy" tailed variety,but i just cant knowing they wouldnt survive in my pond full of comets.

You want to buy?