Overview
The Blue Spotted Jawfish (Opistognathus rosenblatti) is a intermediate saltwater species known for its blue-gray, bright blue spots coloration. Burrows in substrate. Bottom.
Origin & Appearance
Origin: Gulf of California.
Colors: Blue-Gray, Bright blue spots.
Body Shape: Fusiform (torpedo/streamlined). Typical adult dimensions: 10.0 x 1.8 x 3.0.
Sexual Dimorphism: Minimal.
Tank & Water Requirements
| Min Tank Size | 30 gallons |
| Temperature | 75–79°F |
| pH Range | 8.1–8.4 |
| Water Hardness (GH) | dKH 8-12 |
| Bioload | low |
| Oxygen Demand | low |
| Plant Safe | yes |
| Aquarium Position | Bottom |
Behavior & Activity
Vertical hoverer above burrow; rises column-like from sand hole; quick retraction back into burrow when alarmed
Speed: 25/100Aggression: 2/10diurnal
Breeding
Moderate; paternal mouthbrooder
Common Diseases
💊 Ich💊 jumper
Expert Notes
Burrows in substrate; expensive