. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 204 CAIJFORNIA FISH AND GAME. FIGURE 2. The steps in forming the subcutaneous tagging tool: A, Bard and Parker No. 7 handle for a No. 12 blade; B, The handle is filed down to a flat blade 1 mm. thick, 4 mm. wide, and approximately 30 mm. long; C, The handle bent into a U-shope with the end oppo- site the blade sharpened on the outer surface. Drawings by Cliffa Corson. A narrow incision perpendicular to the body axis and not exc
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 204 CAIJFORNIA FISH AND GAME. FIGURE 2. The steps in forming the subcutaneous tagging tool: A, Bard and Parker No. 7 handle for a No. 12 blade; B, The handle is filed down to a flat blade 1 mm. thick, 4 mm. wide, and approximately 30 mm. long; C, The handle bent into a U-shope with the end oppo- site the blade sharpened on the outer surface. Drawings by Cliffa Corson. A narrow incision perpendicular to the body axis and not exceeding 4 mm. in length is made left of the sagittal line and slightly anterior of the ventral fins (Figure 3A). In making the incision it is necessary that the No. 12 blade be held nearly flat, not exceeding 30 degrees in elevation from the body axis. Possibilities of cutting the musculature are thereby greatly reduced and the resulting tapered incision seems to facilitate more rapid healing than could be obtained with a perpen- dicular cut. The pocket for the tag is started by carefully inserting the opposite end of the tagging tool (Figure SB), followed by pressing forward and gently upward simultaneously (Figure 3C). Care must be exer- cised to avoid bruising the tissues or cutting through the skin. If the tool is properly sharpened and bulfed the white pigment is cleanly separated from the outer skin layer with moderate upward pressure. The tag is picked up with flattened forceps, immersed in isopropyl alcohol, and immediately pushed to the forward end of the pocket (Figures 3D and E). Any excess alcohol is not removed from the tag. If the incision is made as above certainly less than one percent of the fish tagged will show any signs of bleeding. Bleeding generally indicates improper placement, poor incision, and/or poor pocket prep- aration. It was found that incisions made on the right-hand side of the belly generally cut blood vessels. No check was made to determine wh
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