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Guitarfish

life science Maturity 5-7 Next article →

The guitarfish is a fascinating animal that lives in the ocean. These fish belong to a group called Rhinobatidae. They are known for having a very long body. Their heads and trunks are quite flat. They also have small wings that look like a ray's wings. In places like Australia and New Zealand, people call them shovelnose rays. Some people even call them shovelnose sharks. They live in many warm waters around the world.

These fish have a body that is in the middle of a shark and a ray. Their tails look like the tail of a shark. However, their heads have a triangular shape. This shape looks just like a guitar. This is how they got their name. They like to live near the coast or in estuaries. Many guitarfish are bottom feeders. They bury themselves in the sand or mud. Once they are hidden, they eat worms, crabs, and clams.

The history of these fish goes back a very long time. Guitarfish are part of an ancient group of cartilaginous fishes. This means their bodies are made of cartilage. Fossil tooth-like scales date back to the Ordovician period. The oldest clear fossils of these fishes are from the middle Devonian. Later, a group called Neoselachii appeared by the Triassic. This group includes sharks, rays, and sawfish. Some of the best fossils from this group are from the Jurassic.

Scientists have spent a long time studying how to group these fish. This is called taxonomy. In 2006, Nelson's book recognized four groups called genera. These were Aptychotrema, Rhinobatos, Trygonorrhina, and Zapteryx. Many of these have since been moved to new families. For example, some are now in the Trygonorrhinidae family. The genus Rhinobatos has even been split into three smaller groups. These include Rhinobatos, Acroteriobatus, and Pseudobatos.

We can find many different types of guitarfish in the sea today. There are many species in the genus Acroteriobatus, like the Zanzibar guitarfish. The genus Pseudobatos also has many members. One example is the Atlantic guitarfish. Some guitarfish face big dangers in the wild. Illegal fishing and trade are a huge threat to them. The Brazilian guitarfish is critically endangered. This means it is at a very high risk of disappearing.

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