 The tail is short , barely exceeding the length of the disc when intact , and has a broad and flattened base leading to usually two stinging spines . After the stings , the tail becomes slender and bears a long ventral fin fold and a much shorter , lower dorsal fin fold . Most of the body lacks dermal denticles ; a midline row of 4 – 13 small , closely spaced thorns is present behind the spiracles , and another row of 0 – 4 thorns before the stings . The dorsal coloration is grayish green , becoming pinkish towards the disc margins ; there is a dark mask @-@ like shape around the eyes and a pair of small dark blotches behind the spiracles . The tail behind the stings has alternating black and white bands of variable width , ending with black at the tip . The underside is plain white and the ventral fin fold is light grayish in color . This species grows to 24 cm ( 9 @.@ 4 in ) across and 45 cm ( 18 in ) long . 
 The tail <a href='drop_aux' title='1'><mark>is</mark></a>short , barely exceeding the length of the disc when intact , and <a href='got' title='2'><mark>has</mark></a> a broad and flattened base leading to usually two stinging spines . After the stings , the tail <a href='uninflect' title='3'><mark>becomes</mark></a> slender and <a href='uninflect' title='4'><mark>bears</mark></a> a long ventral fin fold and a much shorter , lower dorsal fin fold . Most of the body <a href='uninflect' title='5'><mark>lacks</mark></a> dermal denticles ; a midline row of 4 – 13 small , closely spaced thorns is present behind the spiracles , and another row of 0 – 4 thorns before the stings . The dorsal coloration is grayish green , becoming pinkish towards the disc margins ; <a href='dey_it' title='6'><mark>there</mark></a> is a dark mask @-@ like shape around the eyes and a pair of small dark blotches behind the spiracles . The tail behind the stings <a href='uninflect' title='7'><mark>has</mark></a> alternating black and white bands of variable width , ending with black at the tip . The underside <a href='drop_aux' title='8'><mark>is</mark></a>plain white and the ventral fin fold <a href='drop_aux' title='9'><mark>is</mark></a>light grayish in color . This species <a href='uninflect' title='10'><mark>grows</mark></a> to 24 cm ( 9 @.@ 4 in ) across and 45 cm ( 18 in ) long . 
The tail short , barely exceeding the length of da disc when intact , and got a broad and flattened base leading to usually 2 stinging spines . After tdastings , thdaail become slender and bear a long ventral fin fold and a much shorter , lower dorsal fin fold . Most of thedady lack dermal denticles ; a midline row of 4 – 13 small , closely spaced thorns is present behind the spiracles , and another row of 0 – 4 thorns before the stings . The dasal coloration is grayish green , becoming pinkish towards the dda margins ; it is a dark mask @-@ like shape around the eyes and a pair of small dark blotches behind the spiracles . The tail behind the stdas have alternating black and white bands of variable width , ending wid black at the tipdaThe underside plain white and the ventda fin fold light grayish in color . This species grow to 24 cm ( 9 @.@ 4 in ) across and 45 cm ( 18 in ) long .