Suborbital
below the eye.
Subterminal
pertaining to a mouth which opens slightly ventrally (rather than opening at the anterior tip pf the head), with lower jaw
sometimes closing within the upper jaw.
The suborbital (cheek) stripe on A. sp. Tefé is more uniform in width over its entire length than that of A. agassizii. This is more visible when comparing displaying fish and is about the only way to separate female aggies from Tefés.
The name Crenicichla tesay is derived from the Guaraní word for tears; the fish displays a tear-shaped suborbital stripe.
When purchasing your loaches, always ask the store to double or even triple bag the fish, as all Botiine loaches have suborbital spines that will protrude when scared or stressed - it's a defense mechanism.
 See also: Fish, Species, Lateral, Dorsal, Water
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