You said the premium eggs were not premium enough and sure not worth the price if all you would get from them is another fish you could breed from the starting set anyway. This is now fixed, and the premium eggs are back to the fish store.
PLEASE NOTE: the main difference in those premium eggs are the skins. These skins can't be obtained in any other way than hatching premium eggs or breeding premium fish. We will be adding more premium skins in the future and probably more tiers of premium skins as well. There will be no premium fish body parts.
Other than that, two new sets of fish body parts were added.
Finally, we have added some QoL changes: you can now push both fish in the breeding aquarium to the atlas to examine the possible breeding outcomes and it's also possible to filter the outcomes to see how many of them you have not obtained yet.