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Aptocyclus ventricosus Juvenile | Smooth Lumpsucker

This is a juvenile smooth lumpsucker (Aptocyclus ventricosus) with its mouth open. Body size is about seven millimeters. The fish is sitting on Colpomenia sinuosa algae. The white crystals are grains of sand, which provide a sense of scale. This fish grows to a size of around 40cm and is known from Northern Pacific waters down to 1700m depth. It is the only known member of its genus.

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Filename: aptocyclus-ventricosus-juvenile-smooth-lumpsucker-japan-201803-0165.tif
Copyright: Copyright Tony Wu. All rights reserved. No duplication, reproduction or usage without prior written permission.
Image Size: 5417x3611 / 59.6MB; https://www.photoshelter.com/support/license#rm; https://www.tony-wu.com/contact-tony-wu; Bony Fish Lumpsucker Lumpfish Animalia Chordata Osteichthyes Actinopterygii Perciformes Cyclopteridae Smooth Lumpsucker Aptocyclus ventricosus Smooth Lumpfish Hotei-uo Deep Ocean Deepwater Open Mouth Super Macro Juvenile Pacific Japan Sea of Japan Toyama Prefecture
Contained in galleries: Say Ahhhhh!, Fish Photos, Super Macro, Marine Life | Japan

This is a juvenile smooth lumpsucker (Aptocyclus ventricosus) with its mouth open. Body size is about seven millimeters. The fish is sitting on Colpomenia sinuosa algae. The white crystals are grains of sand, which provide a sense of scale. This fish grows to a size of around 40cm and is known from Northern Pacific waters down to 1700m depth. It is the only known member of its genus.