科: Palaemonidae
スジエビは日本・朝鮮半島・華東に分布するミナミヌマエビより大きな Palaemon paucidens で、体長5～8cm、背中の黒い縞が特徴です。15～26℃と丈夫で雑食性。脱走名人なので必ずフタが必要です。
Stripe Shrimp is Palaemon paucidens, the familiar river prawn of East Asia — from Japan and Korea through eastern China — where it creeps through weeds in slow rivers and ponds, picking at whatever it finds. It is a true prawn of the family Palaemonidae, larger and longer-armed than the aquarium shrimp most keepers know: adults reach 5-8 cm with slender claws, semi-transparent grey-brown bodies and the broken dark stripe along the back that gives it its name. In East Asia it is better known as food and bait than as an aquarium animal, but it makes a fascinating native-species display: hardy from 15-26 °C, unfussy about water chemistry, and active by day, constantly working the plants and substrate with its claws. It is an opportunistic omnivore — algae, detritus, dead fish and, yes, live fry — so tankmates must be chosen with care. Keep it in cool-water setups with strong cover; it is an expert climber, so a tight lid is mandatory. A group in a China-native biotope tank, perhaps with Chinese medaka and bitterlings, is a uniquely local display no imported shrimp can match.
中級者向き。Opportunistic predator — peaceful only with equals。Solitary or a pair; territorial perches。
15–26 °C を安定して維持。pH 6.5–8、GH 5–15 dGH。
成魚は 5–7 cm。最低 60 L。
Omnivore-scavenger; will catch tiny fish and shrimp。Sand with leaf litter and shelters上で採餌する性質を活かし、沈む餌も与える。
Opportunistic predator — peaceful only with equals；Solitary or a pair; territorial perches。向いているのはFast-moving native fish (medaka, bitterling) — Too quick and large to be caught, Other cool-water native species — Shares the East-Asian biotope theme。Small fry and tiny fish — Will be eaten by this opportunistic prawn, Slow long-finned fish — Nipped fins and stress, Tanks without a lid — Escapes within daysは不向き。
原産地はEast Asia — Japan, Korea, China, Russia (Amur)。Rivers, lakes and ponds with vegetation and coverに生息。Still to gentle current。Moderate oxygen; tolerates cool water。
飛び出す種。ふたをしっかり閉める。
繁殖：Breeds in freshwater in spring and summer. The female carries a few hundred small greenish eggs under her abdomen; hatchlings are planktonic larvae that drift in the water column and rarely survive in a community tank.。Females carry the eggs and grow broader; males have noticeably longer claws relative to body size.。