🇦🇪 Untitled by NASER786

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2024 years ago by carcarboris
What kind of fish is this?
2024 years ago by jayakrishnanib@mail.com
Dear Naser, Please go through the below description, The shovelnose guitarfish, Rhinobatos productus, is a ray that becomes sexually mature at an estimated seven to eight years. Males are between 90–100 cm, while females are around 99 cm at this time. The ray can live up to 11 years, and full grown sizes are around 120 cm for males, and females reach sizes of 137 cm.[1] Their habitat ranges from central California down to the Sea of Cortez. While remaining the same species, there is a morphological and genetic variation in the mitochondrial DNA in those found in the Sea of Cortez, evidencing the isolation from the rest. The shovelnose is considered to be a primitively developed ray, with many features of both sharks and rays. Because of this, the conservation of this species must be carefully managed to preserve the biological diversity.[2] The Rhinobatos productus has magnetic particles in the vestibular receptors, and it is presumed that the magnetic particles are exogenous in origin. he magnetic particles have a spatial arrangement that may aid in the sensitivity of the receptors to movements, but additional research is required.[3] The visual system of the shovelnose is more extensive and developed than other Elasmobranchii, with multiple large projections connecting to the brain. Almost the entire dorsal and ventral hypothalamus is connected to the visual system, but still maintains a similar lack of differentiation as with sharks. This species has had one documented case of an attack on a diver when a male guitarfish was interrupted during mating. Due to the tooth structure of the guitarfish, this attack could have resulted in a "gumming" at worst. A 32 inch shovelnose guitarfish caught in the surf at San Diego. Shovelnose ray was first considered to be a shark because of its dorsal fin's shape. Regards JK

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