It is also known as crocodile tears, scales stitch and mermaid stitch to name a few. The crocodile stitch is a very versatile and useful stitch and lends itself to many projects.
This is one variation of the stitch. There are many ways to achieve the end result.
Stitch created with multiples of 6 plus 2 yarn weight: 4
Foundation Row: chain 32
Row 1: double crochet in each chain across row Row 2: chain 3(This counts as first double crochet)keeping right side facing front, work 4 double crochet around post of the first double crochet from top to bottom, chain 1, keeping right side facing, turning work so double crochet is sideways facing front, half scale made facing opposite, work 5 double crochet around next double crochet working from bottom to top(1 scale done)* Chain 1, fold scale down, right side facing, skip next 5 double crochet, work 5 double crochet from top to bottom around post of next double crochet, chain 1 turn work, work 5 double crochet from bottom to top around post of next double crochet*, repeat from* to * across row. Turn work with wrong side side facing, slip stitch in centre of last scale made to secure.
Row 3: double crochet across row and turn. Row 4: chain 1 skip skip 5 double crochet * work 5 double crochet around post of next double crochet around post of next double crochet working stitches from top to bottom, chain 1 with right side facing turn work, so hook inserts from side of next double crochet and points towards centre of scale just worked, work 5 double crochet from bottom to top around next double crochet, chain 1 skip next 5 double crochet* repeat from* to* across ending with A slip stitch to secure. Turn. Row 5: double crochet across, turn. Repeat Rows 2 - 5 for pattern.