rak

/rak/

Cases

SingularPluralWhen to use it
nominativerakthe crayfishraklathe crayfishesthe plain dictionary form — the doer of the sentence
genitiveraknıthe crayfish'sraklanıthe crayfishes'the owner — whose it is
accusativeraknıthe crayfish (as the object)raklanıthe crayfishes (as the object)a specific, known object — whom or what
dativerakhato the crayfishraklağato the crayfishesdirection or recipient — to where, to whom
locativerakdaat / in the crayfishrakladaat / in the crayfisheswhere it is; also having — mende bar, "I have it"
ablativerakdanfrom the crayfishrakladanfrom the crayfisheswhere it comes from; also "than" when comparing
When to use each case
nominative
the plain dictionary form — the doer of the sentence
genitive
the owner — whose it is
accusative
a specific, known object — whom or what
dative
direction or recipient — to where, to whom
locative
where it is; also having — mende bar, "I have it"
ablative
where it comes from; also "than" when comparing

The endings are the same ones the pronouns wear — that page explains when each case is used.

With an owner

One ownedSeveral owned
myragımmy crayfishraklarımmy crayfishes
yourragıngyour crayfishraklarıngyour crayfishes
his / herragıhis / her crayfishraklarıhis / her crayfishes
ourragıbızour crayfishraklarıbızour crayfishes
you all'sragığızyou all's crayfishraklarığızyou all's crayfishes
theirraklarıtheir crayfishraklarıtheir crayfishes

The overlap in the last rows is real, not a mistake: rakları can mean "his / her crayfishes", "their crayfish", or "their crayfishes" — context decides.