One sea lamprey can kill up to 18 kg (40 lb) of fish a year. They ate whitefish, perch, and sturgeon as well. In the 1830s, sea lampreys moved into the US Great Lakes and killed off most of the trout fishery there. They cut a hole in the side of the fish and eat the blood and body fluids of the living fish until it dies. Lampreys slowly kill fish with bones, like sea trout, by hooking on to them with their sucker mouths and sharp rings of teeth. The sucker-mouthed sea lamprey looks like a fish crossed with a leech. You May Also Like: 25 Fascinating Coral Reef Animals: Unveiling Nature’s Most Beautiful Ecosystem 1. Read on to learn about some of the weirdest and most ugly fish in the world. Remember that something that looks ugly to us could be very attractive to another ugly fish of the same kind. Some of them look like they were put together with cheap parts that were left at the bottom of a box.Įven if it seems strange to us, there’s usually a good reason why a fish looks “ugly.” Fish are often beautiful, colorful, and mysterious creatures.īut not all fish are pretty to look at.
There are over 32,000 types of fish in the world today.
Some “ugly” fish, like the Asian Sheepshead Wrasse, can change their sex.Many deep-sea fish use bioluminescence to attract prey in the absence of light.Many “ugly” fish reside in deep-sea environments, where they’ve evolved to withstand extreme conditions.Some fish appear “ugly” due to adaptations for their habitat, camouflage, attraction, or catching prey.
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