Just an FYI... Amphibians don't have scales. They can have protuberances that are roughened, but not scales. Frogs, toads, newts, salamanders, mudpuppies, etc., are all amphibians, mostly very smooth skin. Turtles, snakes, gators, croc's, etc., are reptiles, with beautiful coloration and patterning to their skin (erroneously called "scales" due to their shape. For example, snakes shed their skin in whole), but do not have separating scales as an outgrowth from cells with in the skin proper or have pillae to raise them. Fish, have calciferous scales that are grown from specialized skin cells (somewhat similar to our hair follicle) with growth rings, and the ability to replace an individual scale if lost or damaged. The only other animal, is an insect, the Butterfly, that has scales on their wings.
True! Reptiles do have larger scales toward the bodies' centerline, graded to the sides and junction of arms and legs, and diminishing toward tips (toes, tail, facial edges).
Hope this helps!
(((HUGz))) and Bubble's
Mermaid Marla
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