Skull Bones of Scoliodon Skull Bones are consists of Comments 1. Cranium and sense capsules Made up of a single piece of cartilage and divisible into 4 regions. 2. Visceral skeleton It forms jaws, skeleton of pharynx and a series of V-shaped visceral arches around buccal cavity and pharynx. Important arches are : Skull Bones […]
Introduction The genus Hystrix, commonly known as Old World porcupines, comprises large rodents renowned for their unique defensive adaptations, including sharp, spiny quills. These animals are part of the family Hystricidae and are distributed across Asia, Africa, and parts of Southern Europe. With their nocturnal habits and herbivorous diet, porcupines play an essential role in
Introduction Neoceratodus forsteri, commonly known as the Australian lungfish or Queensland lungfish, is a remarkable species of freshwater fish endemic to Australia. It is considered a “living fossil,” as its lineage dates back to the Devonian period, approximately 400 million years ago. This species belongs to the subclass Dipnoi (lungfishes) and is among the most
Introduction Lepidosiren paradoxa, commonly known as the South American lungfish, is a unique species of freshwater fish native to South America. It belongs to the family Lepidosirenidae and is one of the six living species of lungfish. Known for its ability to breathe both underwater using gills and on land through primitive lungs, Lepidosiren paradoxa
Introduction The African lungfish (Protopterus) is a remarkable freshwater fish known for its unique ability to breathe both water and air. This ancient species is often referred to as a “living fossil,” representing a crucial link in the evolutionary transition from aquatic to terrestrial life. Lungfish belong to the order Dipnoi and are part of
Introduction The genus Ostracion, commonly referred to as boxfish, represents a fascinating group of marine creatures characterized by their box-like, armored bodies. Found in the family Ostraciidae, these fish are a prominent feature of coral reef ecosystems. Their distinctive appearance, coupled with unique behavioral and physiological traits, makes them a subject of intrigue for marine
Introduction The genus Diodon, commonly referred to as porcupinefish, represents one of the most distinctive groups of marine animals. Belonging to the family Diodontidae, these fish are often confused with pufferfish (family Tetraodontidae) due to their ability to inflate their bodies. However, porcupinefish are unique because of their long, sharp spines that become erect when
Introduction The genus Lophius, commonly known as monkfish or anglerfish, represents a group of bottom-dwelling, deep-water fish in the family Lophiidae. Renowned for their grotesque yet fascinating appearance, these fish have intrigued scientists and fishermen alike. Characterized by their wide, flattened heads, large mouths filled with sharp teeth, and a unique lure on their dorsal
Introduction The genus Pleuronectes, commonly referred to as flatfish, is an integral part of the family Pleuronectidae. These fascinating fish are well-known for their asymmetrical body shape and benthic lifestyle, primarily inhabiting cold and temperate waters. As bottom-dwelling fish, Pleuronectes species exhibit unique physiological and behavioral adaptations, such as their lateralized body structure and ability
Introduction The genus Tetraodon, commonly referred to as pufferfish, represents a unique group of fish in the family Tetraodontidae. Found predominantly in tropical and subtropical waters, these fish are known for their ability to inflate their bodies as a defense mechanism. This characteristic, combined with their distinct morphology and potent toxins, makes them one of
Introduction The genus Echeneis, commonly known as suckerfish or remoras, comprises fascinating marine species famous for their unique ecological relationship with larger marine animals such as sharks, rays, and sea turtles. These fish have evolved a specialized adhesive disc located on the top of their head, which allows them to attach to hosts and hitch
Introduction The genus Syngnathus, commonly known as pipefish, represents a unique group of marine and estuarine fishes within the family Syngnathidae, which also includes seahorses and sea dragons. Pipefish are characterized by their slender, elongated bodies, tubular snouts, and prehensile tails, making them some of the most distinctive species in marine ecosystems. Their name, derived
Introduction The genus Hippocampus, commonly known as sea horses, comprises a group of unique and enchanting marine fishes belonging to the family Syngnathidae. With their horse-like head, curled prehensile tail, and upright posture, sea horses are among the most unusual and captivating creatures in the ocean. The name Hippocampus originates from the Greek words “hippos,”
Introduction The genus Anabas, particularly the species Anabas testudineus (commonly known as the climbing perch), is a freshwater fish native to South and Southeast Asia. This remarkable fish is well-known for its ability to breathe air and survive outside water for extended periods. In addition, it exhibits the unique behavior of “walking” on land, using
Introduction The genus Pterois, commonly known as lionfish, comprises venomous marine fish renowned for their striking appearance, including elongated pectoral fins and bold stripes or banding patterns. Native to the Indo-Pacific region, lionfish have become infamous as an invasive species in the Atlantic and Caribbean waters. Their distinctive beauty makes them a popular choice in
Introduction Amphipnous cuchia, commonly referred to as the cuchia or swamp eel, is a fascinating freshwater fish belonging to the family Synbranchidae. This air-breathing species is known for its elongated, snake-like body and remarkable adaptability to challenging environmental conditions. Native to South and Southeast Asia, it thrives in a variety of aquatic habitats, including marshes,
Introduction Anguilla vulgaris, commonly known as the European eel, is a catadromous fish species belonging to the family Anguillidae. This species is renowned for its remarkable life cycle, involving long-distance migration from European freshwater habitats to the Sargasso Sea for reproduction. The European eel exhibits significant ecological, cultural, and economic importance, particularly in European regions
Introduction Ophiocephalus punctatus, commonly known as the spotted snakehead, is a freshwater fish species belonging to the family Channidae. Native to South and Southeast Asia, it is a predatory species renowned for its adaptability, resilience, and aggressive feeding behavior. The snakehead fish derives its name from the snake-like appearance of its elongated body and scaled
Introduction Barbus sarana, commonly referred to as the sarana barb or minnow, is a small to medium-sized freshwater fish belonging to the family Cyprinidae. Found across South and Southeast Asia, this species is a valuable component of aquatic ecosystems due to its role in nutrient cycling and as a food source for larger fish and
Introduction Wallago attu, commonly known as the freshwater shark or wallago catfish, is a large, predatory catfish species belonging to the family Siluridae. Native to South and Southeast Asia, this fish is characterized by its elongated body, large mouth with sharp teeth, and prominent barbels. Its significant size and predatory nature make it a dominant
