squaretail: sluggish square-tailed fish armored with tough bony scales; of deep warm waters
scombroid: important marine food and game fishes found in all tropical and temperate seas; some are at least partially endothermic and can thrive in colder waters
tebibit: a unit of information equal to 1024 gibibits or 2^40 (1,099,511,627,776) bits