Group · Fish
Dogfish (rock salmon)
The dogfish, or lesser spotted dogfish (known in French as roussette), is a small shark common on European coasts, sold under the trade name rock salmon (saumonette in French) once skinned and beheaded. It is the same fish under two names.
In terms of nutrition facts, raw: 97.8 kcal per 100 g for 23.3 g of protein and only 0.5 g of fat. It provides 258 mg of potassium, 147 mg of phosphorus, 28.8 µg of selenium and 1.95 µg of vitamin B12 per 100 g, with 0.31 g of salt.
Macronutrient breakdown
Nutrition table per 100 g
| Calories | 98 kcal |
| Kilojoules | 415 kJ |
| Protein | 23,3 g |
| Fat | 0,5 g |
Micronutrients per 100 g
All measured nutrients, ranked by share of the daily reference intake.
- Vitamin B121,95 µg78 %
- Selenium28,8 µg52 %
- DHA0,09 g34 %
- Phosphorus147 mg21 %
- Vitamin B33,14 mg20 %
- Vitamin B60,25 mg18 %
- Iodine26,2 µg17 %
- Potassium258 mg13 %
See the other 15 nutrients
- Zinc0,87 mg9 %
- Vitamin B20,08 mg6 %
- Magnesium20,9 mg6 %
- EPA0,01 g5 %
- Total omega-30,1 g4 %
- Vitamin B50,2 mg3 %
- Iron0,37 mg3 %
- Vitamin B10,03 mg2 %
- Vitamin E0,22 mg2 %
- Vitamin B93,07 µg2 %
- Calcium11,7 mg1 %
- Vitamin K10,1 µg0 %
- Vitamin A1 µg0 %
- Omega-6 LA0 g0 %
- Omega-3 ALA0 g0 %
Anses Ciqual 2025. Source: Anses, 2025, Ciqual food composition table
Tips
23.3 g of protein for 0.5 g of fat: an exceptional ratio. It is one of the leanest and most protein-rich fish in the whole database, and one of the cheapest on the counter.
Mercury: it is still a shark. Less concentrated than in a large shark, because it lives for less time, but caution is still advised for pregnant women and young children.
It has no bones. Its skeleton is cartilage: that makes it an excellent fish for children, as long as you manage the mercury question through frequency.
Its flesh holds up to slow cooking. It is the traditional base for rock salmon in mustard or white wine sauce. Allow fifteen minutes, no more: it turns stringy.
An ammonia smell: the sign to know. Like all cartilaginous fish, it excretes urea through its skin. When fresh, it smells of nothing.