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Table 1 Peak IQ benefits by 9 years of agea

From: The 2014 FDA assessment of commercial fish: practical considerations for improved dietary guidance

Species or market type

Size of maximum benefit expressed as a number of IQ points, Estimate (CI)

Oz. per week to become adverse, Estimate (CI)

Oz. per week to reach maximum benefit, Estimate (CI)

Tilefish, Gulf

1.4 (0.0, 2.6)

16 (0, 30)

8 (0, 13)

Swordfish

2.0 (0.7, 3.0)

24 (12, 43)

8 (7, 13)

Shark

2.0 (0.7, 3.0)

24 (12, 44)

8 (7, 13)

Mackerel, King

2.4 (1.4, 3.2)

32 (16, 59)

8 (7, 13)

Orange Roughy

2.6 (1.7, 3.4)

41 (21, 76)

8 (8, 13)

Grouper

2.7 (1.9, 3.6)

54 (26, 94)

8 (8, 13)

Tuna, Fresh

2.8 (2.1, 3.7)

60 (31, 111)

9 (8, 13)

Mackerel, Spanish

2.8 (2.2, 3.7)

64 (33, 117)

9 (8, 13)

Sable Fish

2.8 (2.2, 3.7)

64 (33, 117)

9 (8, 13)

Bluefish

2.8 (2.2, 3.7)

64 (33, 117)

9 (8, 13)

Tuna, Albacore Canned

2.8 (2.2, 3.7)

67 (35, 123)

9 (8, 13)

Croaker, Pacific

2.9 (2.3, 3.8)

78 (40, 144)

9 (8, 13)

Lingcod & Scorpion Fish

2.9 (2.3, 3.9)

82 (42, 151)

9 (8, 13)

Trout, Saltwater

3.0 (2.3, 3.9)

91 (46, 166)

9 (8, 13)

Bass, Saltwater

3.0 (2.4, 3.9)

95 (49, 174)

9 (8, 13)

Halibut

3.0 (2.4, 3.9)

95 (49, 175)

9 (8, 13)

Carp & Buffalo Fish

3.1 (2.5, 4.0)

139 (71, 254)

9 (8, 13)

Snapper, Porgy & Sheepshead

3.1 (2.5, 4.1)

147 (76, 270)

9 (8, 13)

Perch (ocean), Rockfish, Mullet

3.1 (2.5, 4.1)

157 (81, 288)

9 (8, 13)

Skate

3.1 (2.5, 4.1)

172 (89, 315)

9 (8, 13)

Tuna, Light Canned

3.1 (2.6, 4.1)

296 (101, 360)

9 (8, 13)

Tilefish, Atlantic

3.2 (2.6, 4.1)

214 (110, 392)

9 (8, 13)

Whitefish

3.2 (2.6, 4.1)

235 (121, 432)

9 (8, 13)

Cod

3.2 (2.6, 4.1)

229 (118, 419)

9 (8, 13)

Mackerel, Chub

3.2 (2.6, 4.2)

268 (138, 490)

9 (8, 13)

Croaker, Atlantic

3.2 (2.6, 4.2)

302 (156, 553)

9 (8, 13)

Flatfish & Flounder

3.2 (2.6, 4.2)

310 (160, 568)

9 (8, 13)

Haddock, Hake & Monkfish

3.2 (2.6, 4.2)

351 (181, 644)

9 (8, 14)

Smelt

3.2 (2.6, 4.2)

351 (181, 644)

9 (8, 14)

Crabs

3.2 (2.6, 4.2)

374 (193, 685)

9 (8, 14)

Butterfish

3.2 (2.7, 4.2)

406 (209, 744)

9 (8, 14)

Anchovies, Herring, Shad

3.2 (2.7, 4.2)

471 (243, 863)

9 (8, 14)

Mackerel, Atlantic & Atka

3.2 (2.7, 4.2)

581 (248, 881)

9 (8, 14)

Pollock

3.2 (2.7, 4.2)

636 (328, 1166)

9 (8, 14)

Crawfish

3.2 (2.7, 4.2)

693 (357, 1269)

9 (8, 14)

Trout (freshwater)

3.2 (2.7, 4.2)

736 (379, 1349)

10 (8, 14)

Salmon

3.2 (2.7, 4.2)

1,024 (528, 1876)

10 (8, 14)

Clams

3.2 (2.7, 4.2)

1,024 (528, 1876)

10 (8, 14)

Sardines

3.2 (2.8, 4.3)

1,177 (607, 2158)

10 (8, 14)

Catfish & Pangasius

3.3 (2.7, 4.3)

1,385 (714, 2539)

10 (8, 14)

  1. Abbreviations: CI 5 to 95 % confidence interval, IQ intelligent quotient, oz. ounces
  2. aExcerpted from 2014 FDA Report (Table V-7)