科: Palaemonidae
テナガエビ（Macrobrachium nipponense）はテナガエビ科の淡水エビ。体長約 6–9 cm、機会主義的捕食者で、同サイズの魚との混养が前提、適水温 18–28 °C。
Macrobrachium nipponense is a Palaemonidae freshwater prawn, China's classic food and native-tank species. In the aquarium it is an opportunistic predator — peaceful only with similar-sized tankmates. Plan on 6–9 cm of adult prawn at 18–28 °C, and never combine it with small fish or shrimp.
難易度：中級。Opportunistic predator — peaceful only with equals。
18–28 °C が目安。急変を避け、Stable 18–28 °C; tolerates seasonal cool。
成魚は 6–9 cm。最低 60 L。
Omnivore-scavenger; will actively catch small fish and shrimp。人工飼料に冷凍餌を組み合わせて。
Opportunistic predator — peaceful only with equals；Solitary or a pair; territorial perches。向いているのはMedium-to-large robust community fish — Too large to be prey, Large snails — Armored tankmates survive。Small fish and small shrimp — Will be hunted, especially at night, Slow fish with long fins — Claws nip finsは不向き。
East Asia — China, Japan, Korea; widely farmed原産。Warm rivers, lakes and ponds with vegetation and shelter、Still to gentle current。
驚くと跳ねる。密閉ふたを。
繁殖：Larvae require brackish water; difficult in home aquaria。Males have extremely long second claws; females heavier-bodied。