| देश | Portugal | परितंत्र | Atlantic Ocean |
| स्थान | south and southwest coast of Portugal | Depth | |
| प्रस्तुत किया | Year Intro. | ||
| जीवन अवस्था | not specified | unsexed | |
| Quantitative | 25 | Unit | number |
| Semi Quantitative | <100 | Unit | number |
| Qualitative | rare | ||
| वर्ष | 2006 - 2007 | Period | 2001-present |
| तारीख | 01/08/06 - 31/07/07 | Record Type | survey |
| Record Type | survey | ||
| Seasonal | not specified | विधि | random sampling |
| Remarks | Mass = 1.8 kg; mean total length = 15.0 cm ± 2.7; 76% were discarded due to low gastronomic (economic) value. A complementary survey, using an aerial-roving design, was conducted to assess recreational shore fishing. Aerial surveys were conducted twice a month to obtain instantaneous counts of the anglers in the whole sampling area (with dates, starting time and flight direction randomly selected to minimize visibility bias). Flights were conducted at low altitude (150-200 m) and speed (c. 150km/hr). Roving creel surveys (on-site angler surveys during which angler's harvests were examined) were conducted following a non-uniform probability of sampling, with probabilities assigned to each section based on mean effort data of the previous months (from aerial surveys) (Ref. 85154). | ||