The black dragon fish lives in a temperate, deep equatorial ocean habitat and starts its life resembling a googly-eyed worm before transforming into a nightmarish creature. This fish goes through several developmental stages before its final metamorphosis into a dragon-like creature with a ferociously toothy grin.Know More
As larva, the fish features eyes that float along on spaghetti like strands before it goes through its complete metamorphosis. The life cycle of the black dragon fish includes post-larva, adolescent and transitional adolescent states before reaching adulthood.
Like many fish that live in deep water, the black dragon fish is covered in photophores that allow it to make its own light. When the fish becomes alarmed, it lights up.Learn more in Fish
To tell if a black molly fish is pregnant, look for swelling and a black pregnancy mark on its lower belly. Black molly fish are almost always pregnant, meaning the pregnancy mark is almost always there.Full Answer >
The majority of fish in the world are classified as bony fish, including nearly all commercial and sport fishes. Bony fish are classified by their skeletons that are made, at least partially, of true bone rather than cartilage. Most bony fish also have a swim bladder, covered gill chambers, bony scales, external egg fertilization and a skull with sutures. Other fish, cartilaginous fish, have skeletons made from cartilage.Full Answer >
According to Australian Geographic, the black swallower is a deep-sea fish that lives more than a mile under the ocean's surface in tropical and subtropical waters. It grows to about 10 inches long, has no scales and swallows its prey, which are other fish, whole. Often, this fish attempts to eat other fish that are even bigger than it is.Full Answer >
Betta fish live about 3 years on average, although some perfectly healthy fish may only live for 2 years. Some long-lived betta fish in captivity can survive for up to 10 years, but the majority have a lifespan of less than 5 years.Full Answer >