Welcome back to The World of Geckos! I'm James Walker, and as always, I'm joined by the ever-curious Charlotte Davies. Today, we're diving into something that, honestly, I think is one of the most exciting parts of keeping crested geckos—morphs. Charlotte, I know you love a good color mutation as much as I do.Oh, absolutely, James. And hello to everyone listening. Morphs are such a fascinating topic, aren't they? For anyone new to the term, a "morph" is basically a variation in color or pattern, often driven by genetics. But not all morphs are created equal. Some are what we call polygenic—meaning lots of genes work together to create the look, like the classic flame or harlequin. Others are single-gene, where one gene can make a dramatic difference, like the lily white or cappuccino.Yeah, and then there are those emerging morphs that keep popping up every year. I mean, just when you think you've seen it all, someone posts a photo of a mocha or a phantom, and the whole community goes wild. But let's break it down a bit. So, classic polygenic morphs—these are your patternless, flame, harlequin, tiger, dalmatian, and so on. The results can vary a lot, even within the same clutch, right?Exactly. And visually, they're all over the place. Take the flame morph—dark base with those cream "flames" up the back. Or the harlequin, which has heavy cream or yellow sides, sometimes wrapping onto the limbs. Tigers have those vertical stripes, and dalmatians—oh, the dalmatians!—they get those random ink-like spots that just keep multiplying as they shed.I love the dalmatians. There's something so fun about watching those spots develop over time. And then you get the super dalmatians, where it's just, like, spot overload. But, Charlotte, didn't you have a run-in with a particularly elusive dalmatian morph while filming in New Caledonia?Oh, I did! It was one of those moments where you think, "Is this really happening?" We were out in the rainforest, and our guide spotted this gecko with the most incredible confetti-like spots—reds, greens, blacks, all on a pale background. It was so well-camouflaged, I nearly missed it entirely. We spent hours just trying to get a clear shot, and I remember thinking, "No wonder these morphs are so prized by keepers." It was a real highlight of the trip.That's amazing. And it just goes to show, these morphs aren't just a product of captive breeding—they exist in the wild, too, even if they're rare. But in captivity, breeders have really taken things to the next level, especially with the single-gene morphs. But, uh, maybe I'm getting ahead of myself. Should we talk about how these genetics actually work?Yes, let's! So, with the classic morphs, as we said, it's polygenic—lots of genes, unpredictable results. But with single-gene morphs, like lily white or cappuccino, the inheritance is much more straightforward. For example, lily white is what we call incomplete dominant. If you breed a lily white to a normal, about half the babies will be lily white. But if you breed two lily whites together, you get a quarter of eggs that are non-viable, so it's not something breeders do intentionally.Right, and then you've got cappuccino, which is also incomplete dominant. The super form, called melanistic or "super cap," is this jet-black gecko—really striking, and, honestly, it commands a premium price. And then there are combos, like frappuccino, which is a lily white crossed with cappuccino. That one gets you a near-white gecko with black eyes, sometimes with a subtle phantom pattern. It's wild how two genes can interact and basically "cancel" pigment.And let's not forget the newer discoveries. Since 2023, we've seen morphs like mocha, which is still being worked out genetically but seems to be incomplete dominant as well. There's also phantom, which is a recessive morph that suppresses pattern and deepens the base color. And then the lana morph, which, to be honest, I'm still catching up on—it's all moving so quickly!Yeah, it's hard to keep up sometimes. I remember chatting with a breeder at a reptile expo—he'd managed to produce a lily white x cappuccino combo, and it was the talk of the show. People were crowding around his table, snapping photos, asking about genetics. He told me, "You know, James, I never thought I'd see a gecko like this in my lifetime." And that's the thing—these innovations are happening right now, and they're changing what we think is possible with crested geckos.It's a real testament to how much we still have to learn. Inheritance can be incomplete dominance, recessive, or polygenic stacking, and sometimes you get surprises even when you think you know what to expect. The genetic map is far from complete, and every new morph adds another piece to the puzzle.And that's what keeps it exciting, right? There's always something new around the corner. But it's not just about the genetics—it's also about how these morphs are valued and what drives the market. Maybe we should talk about that next?Definitely. The market for crested geckos has really exploded, especially for those single-gene morphs. Genes like lily white and cappuccino can increase a gecko's value five to ten times over a classic morph. It's not just about rarity, but also the potential for creating new combinations. Breeders are always chasing that next big thing.Yeah, and it's not just the genetics—it's the live color changes, too. Crested geckos "fire up" or "fire down" depending on mood, temperature, and lighting. So, a gecko might look totally different in the morning than it does at night. That unpredictability adds to the appeal, I think. You never really see the same gecko twice.Absolutely. And as we discussed in our last episode, even though these geckos are now household pets, their wild populations still face challenges. But in captivity, the excitement is all about discovery. The genetic map is still incomplete, and every year brings new surprises. Who knows what morphs we'll be talking about next year?Yeah, it's like the frontier of gecko genetics is still wide open. And for anyone thinking about getting into breeding, just remember—do your homework, check the lineage, and, uh, maybe don't pay designer prices unless you know what you're getting. There's a lot of excitement, but also a lot of responsibility.Well said, James. And that's all we've got time for today. Thanks for joining us as we explored the colorful world of crested gecko morphs. We'll be back soon with more stories from the world of geckos. Until then, happy gecko gazing!Thanks, Charlotte. Always a pleasure. And thanks to everyone listening—see you next time!

Episodes

The Colorful World of Crested Gecko Morphs