Shrimp Diseases — Causes & Treatment
Quick reference for common shrimp diseases. Each entry covers: cause, symptoms, risk level, treatment protocol, and recommended products.
White feces floating on water surface, reduced feeding, broken gut segments, pale or empty intestine...
→EHP (Enterocytozoon hepatopenaei)Significant growth retardation, size variation, white feces, shrunken pale hepatopancreas, high FCR,...
→TPD (Translucent Post-larvae Disease)Translucent post-larvae, blurred or shrunken hepatopancreas, stop feeding, weak swimming, rapid deat...
→Red Body DiseasePinkish or dark red body, especially at tail and pleopods. Lethargic swimming, gathering at pond edg...
→Body Curvature / CrampingShrimp curved in U or C shape, twitching, spinning swim, unable to straighten. Often accompanied by ...
→Muscle Opacity / White Muscle DiseaseOpaque white muscle (starting from tail spreading upward), often accompanied by body curvature. Weak...
→Fragmented FecesShort fragmented feces instead of long continuous strings. Pale intestine, may accompany white feces...
→Empty Gut / Hollow IntestineEmpty intestine visible on examination. Shrunken hepatopancreas, thin shrimp, soft shell, muscle atr...
→Algae Crash / Algae CollapseSudden water color change (green → clear or dark brown), morning pH drops sharply, shrimp surface, l...
→High NO2 (Nitrite toxicity)NO2 > 0.5 ppm: appetite loss, surfacing, red body. NO2 > 2 ppm: purple gills, scattered mortality (m...
→High NH3 (Ammonia toxicity)NH3 > 0.1 ppm: stress, reduced feeding, lethargic. NH3 > 0.5 ppm: black gills, surfacing, edge gathe...
→Low AlkalinityAlkalinity < 80 ppm: strong daily pH swings, molting difficulty, thin/soft shell, scattered post-mol...
→Turbid WaterWhite turbid water, transparency < 20cm. Reduced feeding, low DO, difficult algae control....
→Weak Appetite, Slow GrowthReduced feeding, leftover feed in check tray, uneven sizing, high FCR, thin shell....
→Black Gills, Algae FoulingGills turn black/dark brown, covered with algae/sludge. Breathing difficulty, morning surfacing, red...
→Daily pH FluctuationMorning pH < 7.5, afternoon > 8.5 (swing > 0.5-1.0). Shrimp stress, skip afternoon feeding, uneven m...
→Early Mortality Syndrome / AHPNDSudden death within first 30 days, pale white or shrunken hepatopancreas, soft shell, empty gut, bot...
→Vibrio InfectionLuminescence in dark, red body, swollen/shrunken hepatopancreas, white feces, appetite loss, gradual...
→Hepatopancreas DiseasePale, swollen or shrunken, soft hepatopancreas. Reduced feeding, slow growth, thin shell, white or f...
→Molting Issues (Soft Shell, Hard Shell, Post-molt Mortality)Soft shell > 12h post-molt, thin shell, stuck old shell, post-molt mortality, uneven sizing, unsynch...
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