Differences:
* Classification: Lizards are reptiles, while goldfish are fish. This means they belong to entirely different classes of animals.
* Habitat: Lizards live on land, while goldfish live in water.
* Breathing: Lizards breathe air using lungs, while goldfish breathe underwater using gills.
* Skin: Lizards have scales, while goldfish have scales and mucous covering.
* Reproduction: Lizards lay eggs, while goldfish lay eggs that are fertilized externally.
* Diet: Lizards are carnivores or insectivores, while goldfish are omnivores.
Similarities:
* Vertebrates: Both lizards and goldfish are vertebrates, meaning they have a backbone.
* Cold-blooded: Both are cold-blooded, meaning they rely on external sources of heat to regulate their body temperature.
* Eggs: Both reproduce by laying eggs (although goldfish eggs are fertilized externally).
* Predator/Prey: Both can be prey for other animals.
In summary: While lizards and goldfish are both animals, they are vastly different in their biology and lifestyle.