Have you ever wondered if fish can drown? You would think not for they live and breathe in water but you would be surprised to know that in a way they can. Technically not drowning but lack of oxygen can cause a fish to die and there can be several reasons for that. No oxygen left in the water, water not flowing through their gills, or their gills getting damaged can cause drowning.
Here are some more interesting Fish facts that you will enjoy.
- Thanks to evolution, some fishes like Lungfish and Bettas can breathe air while others like eels and catfish can stay without oxygen for a long time by breathing through their skins.
- If water gets polluted or its temperature rises, the oxygen starts to decrease and fish can drown because of it.
- While it does not happen very often, fishes can murder other fishes by drowning, this happens when they block their gills from getting oxygen.
- Some species of shark need to constantly move to get oxygen this is even when they sleep because if they stop moving, they would die due to lack of oxygen.
- Do fishes sleep? Yes and no. They do not sleep in the traditional sense as humans or other animals do but they do get rest and as fishes don’t even have eyelids so imagine sleeping with eyes open.
- Do fishes drink water? Technically yes, freshwater fishes simply let water run through their mouth but for fishes in the sea, they get their water through osmosis from their skins.
- While not technically a fish, it is the Cuvier’s beaked whale that can hold its breath the longest with recorded dives of over 138 minutes.
- The fact that fishes have poor memory with clown fish even having 3 second memory has been debunked and some fish can have really good memory.
- Some fishes can live for a long time with the oldest known fish being 65 years old Australian lungfish in 2003.
- While we call them fish, neither starfish nor jellyfish are technically fish, instead they are echinoderms and phylum Cnidaria respectively.
- Lastly, sharks are the only fish that have eyelids.
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