4105
龍虎斑 (Epinephelus fuscoguttatus x Epinephelus lanceolatus)為雌性棕點石斑魚 (虎斑，Epinephelus fuscoguttatus) 與雄性鞍帶石斑魚 (龍膽，Epinephelus lanceolatus)的雜交種，具有雌雄親本的特徵。龍虎斑體高較高，較接近棕點石斑魚，但吻端較棕點石斑魚為尖。頭部及體側具有5-6條形狀不規則的寬闊黑褐色橫帶，橫帶邊緣輪廓分明，邊緣具有一些黑褐色斑點。各鰭的色斑與鞍帶石斑魚較接近，各鰭鰭膜灰白色至淺黃褐色，具有明顯的黑褐色斑點或條帶，成魚各鰭的斑點明顯較小魚多且緻密。
龍虎斑屬於廣溫以及廣鹽性魚類，對鹽度、溫度的適應範圍較廣，但不能適應低於15ºC水溫。抗病能力強、成長速度快，是目前臺灣石斑魚養殖的主要大宗魚種。
Hybrid Grouper (Epinephelus fuscoguttatus × Epinephelus lanceolatus)
The hybrid grouper is a hybrid between the female brown-marbled grouper (Epinephelus fuscoguttatus) and the male giant grouper (Epinephelus lanceolatus). This hybrid inherits traits from both parent species. It has a relatively high body depth, resembling the brown-marbled grouper, but with a more pointed snout. The head and body feature 5–6 irregularly shaped, broad dark brown transverse bands with well-defined edges, accompanied by small dark brown spots along the margins. The fin coloration is more similar to that of the giant grouper, with fin membranes ranging from grayish-white to light yellowish-brown, marked with distinct dark brown spots or bands. In adult fish, the fins have more numerous and densely distributed spots compared to juveniles.
The dragon-tiger grouper is eurythermal and euryhaline, meaning it can tolerate a wide range of temperatures and salinities. However, it cannot survive in water temperatures below 15°C. With strong disease resistance and a fast growth rate, it has become one of the most commercially important grouper species in aquaculture in Taiwan.
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