Green Fluorescent Protein (GFP) axolotls look like any morph at first glance. However, once exposed to UV light, they glow a bright fluorescent green. This trait is invisible in normal lighting but is unmistakable in UV light. Those with lighter skin glow brighter, as in albino or
Firefly
They are darkly colored wild-type axolotls with green fluorescent protein albino tails. They are called “fireflies” because only part of the body will glow under a blacklight. A wild-type with an albino tail will glow bright green on only the tail, just like a firefly.
The lab-modified axolotls have a gene that produces GFP (green fluorescent protein) which comes originally from a jellyfish that contains it naturally. The salamander's resulting glow is mostly visible under ultraviolet light.
While the axolotls appear to have beige-white skin and pink gills while in their tanks, they cast a green glow when placed under ultra-violet light.
GFP Leucistic axolotls have a similar appearance to common Leucistics, but also carry the green fluorescent protein (GFP) gene in their DNA, which gives them a slight green appearance that glows under certain types of light.
Green Fluorescent Protein (GFP) axolotls look like any morph at first glance. However, once exposed to UV light, they glow a bright fluorescent green. This trait is invisible in normal lighting but is unmistakable in UV light. Those with lighter skin glow brighter, as in albino or leucistic.
Some of the rarest axolotl colors include piebald, copper, lavender, firefly, chimera, and mosaic. The rarest of these is mosaic, which means the axolotl has spots or patches throughout its body.
As for lighting, the axolotl is a nocturnal creature so you need to avoid bright lighting during the day. Lunar LED lighting is a good choice if you want to see your axolotl while he is active without stressing him with bright lighting.
Is this normal, you may wonder? Well, it actually is. They naturally change colour based on environmental and developmental factors.
Two mosaic axolotls are not more likely to produce another mosaic axolotl than any other random pairing of axolotls. This makes mosaic axolotls one of, if not the most, rare “morph” of axolotl in the world!
Green fluorescent proteins (GFP)
Originally found in a species of jellyfish, this trait causes nearly every cell in the axolotl's body to produce a bright yellow protein which glows neon green under a UV light.
First discovered in 1961, the black melanoid is now among the most common axolotl color morphs in the world. The particular mixture of pigments in its skin produces a large range between dark green and completely black morphs with dark purple gills and a pale gray or purple belly as well.
The fluorescent green axolotl is a basic white or albino axolotl, which is also known as a mud puppy or lesser siren.
The Starburst is a copper axolotl with higher concentrations of iridophores or iridescent speckles. As legend has it, the axolotl is the Aztec god of fire and lightning, Xolotl, which disguised himself as a salamander to avoid being sacrificed.
Change the Water Weekly
The water used to keep the Axolotl healthy is also necessary to prevent morphing. If the water is dirty, the animal will be exposed to many bacteria that can cause disease and even death. The best way to avoid this is to change the water in the tank once a week.
White cotton-like growth on skin, limbs or gills
What is this? This is signs of fungus growth by the bacteria known as Chondrococcus columnaris or Columnaris. Definitely not a good sign. You may also find your axolotls scratching affected areas.
Pinkish tint to the color can be an indication of disease. That axolotls' gills look a little funky like it might be stressed, Keep an eye on water temp and quality. If it starts to look worse it might need medicated.
Albino (a)
The mutation for albinism was introduced into axolotls from an albino tiger salamander (Ambystoma tigrinum) female discovered in Minnesota (Humphrey, 1967; Hennen, 1977). Animals homozygous for this recessive gene completely lack the ability to synthesize melanin.
Usually, if an axolotl is sitting very still, they don't need a lot of oxygen. So the blood (which carries oxygen) doesn't flow to the gills in high volumes. So the gills can look pale. They will usually pink up when the animal is active or eating.
Blue lights are safe for viewing the Axolotl. Two of the most important aspects of Axolotl care are temperature and water flow.
The first benefit is that axolotls will actually play in the bubbles. Many axolotl keepers (myself included) have witnessed their axolotls swim over to the air stone and then ride the bubbles up to the top. They will purposefully go over to the air stone to hang out in the bubbles, and they seem to really enjoy it.
Axolotls can't blink
If you've ever wondered why your axolotls always seem like they're awake, it's because they can't shut their eyes. Axolotls have no eyelids, so even though they have a cute smile, they can't wink at you.
As many of you might expect, the rarest variant of Axolotl in Minecraft is the blue Axolotl. As per Minecraft Wiki, this variant has a spawn chance of just 1 in 1200 (0.083%), making it one of the rarest mobs in the game.
Leucistic Axolotl
Leucistic axolotls are truly unique and beautiful creatures. They have translucent white bodies with shiny gold flecks, red or pink gills, and dark brown or black eyes. The stunning color combination of these axolotls sets them apart from other aquatic species.
When an axolotl is spawned in the world naturally or by breeding, there is a 24.97% for it to have one of the following colors: leucistic, brown, gold, and cyan. Therefore, the chance for the axolotl to have blue skin is only 0.083% (or 1/1200).