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Hace 1 día · Fish, any of approximately 34,000 species of vertebrate animals (phylum Chordata) found in the fresh and salt waters of the world. Living species range from the primitive jawless lampreys and hagfishes through the cartilaginous sharks, skates, and rays to the abundant and diverse bony fishes.
- Annotated Classification
Fishes are typically divided into three groups: superclass...
- Excretory Organs
Fish - Excretion, Gills, Kidneys: Kidneys are the primary...
- Behaviour
Fish - Migration, Communication, Adaptation: Fish behavior...
- The Digestive System
Fish - Digestion, Anatomy, Nutrition: The structure of a...
- Reproduction
Fish - Reproduction, Spawning, Fertilization: The methods of...
- Locomotion
Fish - Swimming, Fins, Adaptations: Many fishes have a...
- Evolution and Paleontology
Fish - Evolution, Paleontology, Adaptation: The earliest...
- The Respiratory System
Fish - Gills, Lungs, Swim Bladder: Most fishes exchange...
- Annotated Classification
Hace 4 días · La hibridación fluorescente in situ (FISH) es una técnica de laboratorio que se usa para detectar y localizar una secuencia de ADN específica en un cromosoma.
Hace 7 horas · After being swallowed alive, Japanese eels were able to escape from a predator fish’s stomach and swim to freedom through the fish’s gills, new research shows.
Hace 1 día · Learn about the three main groups of fishes: jawless, cartilaginous, and bony fishes. See their characteristics, habitats, evolution, and diversity with annotated classification and illustrations.
Hace 1 día · Seafood is the culinary name for food that comes from any form of sea life, prominently including fish and shellfish. Shellfish include various species of molluscs (e.g., bivalve molluscs such as clams, oysters, and mussels).
Hace 1 día · Fish - Reproduction, Spawning, Fertilization: The methods of reproduction in fishes are varied, but most fishes lay a large number of small eggs, fertilized and scattered outside the body. Some fishes are hermaphroditic. Self-fertilization is probably rare.
Hace 1 día · The ancient coelacanth, a lobe-finned fish, is a “living fossil” in every sense of the term. Biologists believe this supreme survivor has undergone little change in 400 million years. Here’s ...
