I think most people here wouldn't describe a fish with a missing gill plate as "perfectly happy and healthy"
.
I'm not most people
I have a polkadot loach that has a missing gill plate.
I would certainly say s/he is happy and healthy
.
I do aggree that should anything go wrong with water
params s/he will proberbly be the first to go, but so far so good.
s/he has been like this for nearly a year now
Missing a gill plate as in from an accident or from mutation like from inbreeding though?
I'm still one of those people that would never describe a breeding atrocity such as this;
http/animal-world.com/encyclo/fresh/goldfish/BubbleEye.php
http/www.bristol-aquarists.org.uk/goldfi...lest/ce01-1.jpg
As "happy and healthy". I view these sorts of goldfish the same as these koi that are supposedly bred to have a missing gillplate (i wouldn't put it past breeders to do this, or even worse, mutilate the fish to get this effect)- fish don't evolve these features in the wild because they cause can problems for the fishes health and well-being in a variety of ways.
A gill plate is there to protect the very vunerable membrane of its gills- it would be like me or you have no rib cage to protect your soft lungs, or hairs in our noses to prevent dust and stuff getting breathed into your lungs. A scratch or knock on the membrane or even a desease could have terible consequences on the fishes health.
Popeye desease would not even be worth thinking about on celestial or bubble eye goldfish, and a missing gillplate leaves the gills open to pretty much every fish desease there is to grow on them- fungus would easily suffocate the fish while gill flukes would be aweful.
I have a neon tetra with a missing gill plate, It got ripped off in a nasty accident over a year ago. I did not put the tetra down because its leading a good quality of life as far as i know, but if i ever see it suffering from its bodily loss i shall not think twice of putting it down as there would be no doubt that that would be the source of the problem, which is pretty much unfixable since neon tetra gillplates don't grow back.
On no account though should people be allowed to breed fish with such mutilations though, it is immoral and inhumane- unlike the neon, these fish will never experience what it is like "to be whole". On no account should someone describe a fish as "healthy and happy" to lure customers into buying it, when it has been bred into a miserable existance from the start.