answer:Systems of Measurement: there are two main systems of measurement in the world: the Metric (or decimal) system and the US standard system. In each system, there are different units for measuring things like volume and mass.
Catfish are a diverse group of ray-finned fish and are found in freshwater environments. Catfish are most diverse in tropical South America, Asia, and Africa, with one family native to North America and one in Europe. More than half of all its species live in the Americas.
Explanation:Scientific classification Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Superorder: Ostariophysi Order: Siluriformes Physical Characteristics
They have flattened head that allows digging through the substrate as well as perhaps serving as a hydrofoil. Some catfish have a mouth that can expand to a large size and contains no incisiform teeth; they generally feed through suction or gulping.
They may have up to four pairs of barbels: nasal, maxillary, one on each side of mouth, and two pairs of chin barbels.Catfish as food
Catfish have widely been caught and farmed for food for hundreds of years around the worldEurope - often cooked in similar ways to carp United States - popularly crumbed with cornmeal and fried Indonesia- usually served fried or grilled in street stalls called warung Malaysia - is fried with spices or grilled and eaten with tamarind and is often eaten with steamed rice. Bangladesh - eaten as a favored delicacy during the monsoons. Hungary - often cooked in paprika sauce, typical of Hungarian cuisine. Catfish is traditionally served with pasta smothered with curd cheese Myanmar - usually used in mohinga, a traditional noodle fish soup cooked with lemon grass, ginger, garlic, pepper, banana stem, onions, and other local ingredients.Filipino - fried with vinegar and kalamansi dip sauce Nigeria- cooked in a variety of stews. Catfish is particularly cooked in a delicacy popularly known as "Catfish Pepper Soup".
Know the Difference of osmoregulation between freshwater fish and saltwater fish:
Know that is the phylum of catfish:
Know Why did native catfish become endangered: