Filament and fishing line

A filament comprising a polyamide resin (A),

• the polyamide resin (A) being constituted from a constituent unit derived from a diamine and a constituent unit derived from a dicarboxylic acid, and
• all of the constituent units derived from a diamine being derived from xylylene diamine or all of the constituent units derived from a diamine being derived from both xylylene diamine and a diamine other than xylylene diamine, where the diamine other than xylylene diamine is at least one kind of diamine selected from the group consisting of tetramethylene diamine, pentamethylene diamine, 2-methylpentane diamine, hexamethylene diamine, heptamethylene diamine, octamethylene diamine, nonamethylene diamine, decamethylene diamine, dodecamethylene diamine, 2,4,4-trimethylhexamethylene diamine, 1,3-bis(aminomethyl)cyclohexane, 1,4-bis(aminomethyl)cyclohexane, 1,3-diaminocyclohexane, 1,4-diaminocyclohexane, bis(4-aminocyclohexyl)methane, 2,2-bis(4-aminocyclohexyl)propane, bis(aminomethyl)decalin, bis(aminomethyl)tricyclodecane, bis(4-aminophenyl)ether, p-phenylene diamine, and bis(aminomethyl)naphthalene, and
• 70 mol % or more of the constituent units derived from a dicarboxylic acid being derived from 1,12-dodecanedioic acid, and other constituent units derived from a dicarboxylic acid are derived from the group consisting of succinic acid, glutaric acid, pimelic acid, suberic acid, azelaic acid, adipic acid, phthalic acid compounds, and naphthalene dicarboxylic acid,
• wherein the filament is free from plasticizer, and
• wherein the xylylene diamine comprises from 10 to 90 mol % of meta-xylylene diamine and from 90 to 10 mol % of para-xylylene diamine, provided that a total of the meta-xylylene diamine and the para-xylylene diamine does not exceed 100 mol %.