The limbs for Amohibian is Weak legs...
The caecilians are limbless amphibians.
Most amphibians have four limbs. However, some species have lost limbs or adapted to different environments, leading to variations in the number of limbs among different amphibian species.
Fifth
4, except caecilians have none.
Caecilians have no limbs or appendages.
Well they have limbs and lungs, which I would consider more complex.
because their limbs and bones are stronger than those of amphibians
Strong skeletons and muscular limbs.
Amphibians originated from from a tetrapod. Early tetrapods were like fish but may have had limbs to move on the bottom of marshes. In later fossils, the limbs were found further below to lift the animal off the ground. Eventually, amphibians arose the ability to breath through the air as well as water.
A tetrapod is a vertebrate animal with four limbs. "Tetra" means "four" and "pod" means "foot". Amphibians, reptiles, birds and mammals are all tetrapods; even snakes and other limbless reptiles and amphibians are tetrapods because they descended from animals which had four limbs. Whales and other cetaceans are also tetrapods because they are mammals have two front limbs and the two hind limbs are vestiges.
Coqui frogs, like other anurans (frogs and toads), possess paired appendages, specifically two front limbs and two hind limbs. These limbs are adapted for various functions such as jumping, climbing, and swimming. The structure of their limbs is typical of amphibians, with four digits on the front limbs and five on the hind limbs.
No. Fish breathe through gills and have scaly skin. They have fins and no true limbs. Amphibians breathe throgh gills during development stage then convert tro lungs. Most then grow limbs and have naked (no scales) skin. Examples of amphibians are frogs, newts, salamanders and toads.