The Quillfish, Ptilichthys goodei, is a slender, elongate fish distributed along the coastline of the North Pacific from Oregon to the Sea of Japan. It is the sole member of the monotypic family Ptilichthyidae, which is classified among the Zoarcoidei (eelpouts and their allies). Little is known of its osteology and there is much conflicting information in the literature regarding its morpholog...

The morphology of the vertebrate skeleton exhibits tremendous plasticity in evolution, allowing adaptation to a wide variety of ecological niches and lifestyles. Indjeian et al. now uncover how the cis regulation of a gene controls skeletal variation in fish and might have contributed to the evolution of bipedalism in humans.

Responses in Atlantic salmon (Salmo salar L.) juveniles (fry) fed diets containing genetically modified maize (Bt-maize, MON810) expressing Cry1Ab protein from first-feeding were investigated during a 99-day feeding trial. Four experimental diets were made; each diet contained ∼20% maize, either Bt-maize or its near-isogenic maternal line (non-GM maize). One pair was fishmeal-based while the ot...

Type II collagen is the major cartilage matrix protein in the jawed vertebrate skeleton. Lampreys and hagfishes, by contrast, are thought to have noncollagenous cartilage. This difference in skeletal structure has led to the hypothesis that the vertebrate common ancestor had a noncollagenous skeleton, with type II collagen becoming the predominant cartilage matrix protein after the divergence o...

ABSTRACT Hyperostotic bones occur in several families of marine teleosts, however there are few reports on its development fish from Brazilian waters. The present study identified the occurrence hyperostosis specimens Leatherjacket Oligoplites saurus, an important commercial species, using radiographic images. Biometric measurements four were performed and affected detected different levels reg...

Aim of the current piece work was to study food composition and feeding intensity Channa striata from Krishna river June, 2019 July 2020. The gut contents were analysed three stations undertaken fish. major components items in fish was: fishes their larvae, crustaceans, insect annelids with semi digested material unidentified items. Fishes are identified as teleost, particularly carps cat larva...

Inspired by the relatively simple morphological blueprint provided by batoid fish such as stingrays and skates, we created a biohybrid system that enables an artificial animal--a tissue-engineered ray--to swim and phototactically follow a light cue. By patterning dissociated rat cardiomyocytes on an elastomeric body enclosing a microfabricated gold skeleton, we replicated fish morphology at 1/1...

study of the osteological development in fishes is important from fisheries, biology and aquaculture points of views. it can be used as an early bio-indicator of non-optimal rearing conditions. the caspian roach, rutilus caspicus is a native cyprinid fish of the caspian sea that its artificial propagation has fulfilled in hatcheries to recruit its natural stocks. hence, this study was conducted...

Bone evolved to serve many mechanical and physiological functions. Osteocytes and bone remodeling first appeared in the dermal skeleton of fish, and subsequently adapted to various challenges in terrestrial animals occupying diverse environments. This review discusses the physiology of bone and its role in mechanical and calcium homeostases from an evolutionary perspective. We review how bone p...