rong xương cá

Những nhánh rong xương cá xanh mướt mọc vươn cao trong làn nước trong vắt của bể cá.

Definition

1. Noun:
   • Water milfoil: A common name for aquatic plants of the genus Myriophyllum. These are submerged freshwater plants with feathery, finely divided leaves that resemble a fish's skeleton or long bones, which is the origin of the Vietnamese name.
   • Parrot's feather: A specific common name for Myriophyllum aquaticum, a popular but often invasive species in aquariums and ponds.

Usage Examples

• Noun:
  • Rong xương cá thường được dùng trong bể thủy sinh để cung cấp oxy và nơi trú ẩn cho cá. (Water milfoil is often used in aquariums to provide oxygen and shelter for fish.)
  • Loài rong xương cá này phát triển quá nhanh và trở thành loài xâm lấn ở nhiều con sông. (This parrot's feather grows too quickly and has become an invasive species in many rivers.)

Advanced Usage

• The term is primarily used in botany, aquaculture, and hobbyist circles (e.g., aquarium keeping, water gardening). It describes a type of plant, not an animal or object.

Variants and Related Words

• Myriophyllum (n): The scientific genus name for all water milfoil species.
• Cây thủy sinh (n): Aquatic plant; the general category to which belongs.

Synonyms

• Water milfoil
• Parrot's feather (for )

Notes on Meaning

• The name is a descriptive compound noun in Vietnamese: "" (weed/algae) + "" (fish bone). It directly references the plant's appearance.
• It does not refer to algae growing on fish bones, nor is it a type of seaweed (). It is a distinct, rooted aquatic plant.