Abstract: The invention relates to a method for processing fish of the Trachurus species and an apparatus for performing the method.In order to obtain top quality products of this fish type and with a high yield, there is provided a tool for removing the bony structure at the end of the abdominal cavity which is prejudical to precise processing. The tool comprises two circular knives acting as abdomen openers and in whose gap there is arranged a guide member with a sharp leading edge and covering the upper rear area of the cutting edges, which guide member removes the fin ray support (pterygophore) of the anal fin overlappingly connected to the first belly spoke (haemapopyses of the eleventh vertebra) together with the anal fin and the abdomen edge, so that no bearing or rearing up of the tail area impeding the separation of the lateral keeled scales, in particular, occurs.

Abstract: The invention relates to a method for processing fish of the Trachurus species and an apparatus for performing the method.In order to obtain top quality products of this fish type and which a high yield, there is provided a tool for removing the bony structure at the end of the abdominal cavity which is prejudicial to precise processing. The tool comprises two circular knives acting as abdomen openers and in whose gap where is arranged a guide member with a sharp leading edge and covering the upper rear area of the cutting edges, which guide member removes the fin ray support (pterygophore) of the anal fin overlappingly connected to the first belly spoke (haemapophyses of the eleventh vertebra) together with the anal fin and the abdomen edge, so that no bearing or rearing up of the tail area impeding the separation of the lateral keeled scales, in particular, occurs.

Abstract: A device for aligning fish to be handled in fish-processing machines is shown. The object of the invention is to lead fish, especially those with approximately circular cross-section to the processing tools so exactly that the processing can be carried out most economically, i.e. with a high yield without any danger of undesirable parts, e.g. the skeleton, remaining in the product to be used. The device according to the invention handles fish whose abdominal cavity is opened. The device comprises, in a known manner, a saddlelike guide element which supports the fish in its abdominal cavity, conveying means which engage the flanks of the fish being arranged on both sides of the guide element. A support surface which is formed with a concave cross-section carries knives extending into the fish path and lying flush with the support edges.