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31. The dorsal arm plates are fan shaped, much wider than long and separated from one another.

32. With the viral reactivation, inflammatory changes occur in dorsal root ganglia and nerve roots.

33. The ventral interradial areas are covered by scales like those of the dorsal surface but the rod-like spinelets are usually smaller.

34. The ventral interradial areas are also covered with spinelets which are more nearly granular than those of the dorsal side.

35. Locomotion is effected by undulating waves of muscle contraction and relaxation which alternate on the dorsal and ventral aspects of the worm.

36. The dorsal arm spines are the longest nearly two arm segments in length, the ventral arm spines are much shorter.

37. In addition, it has some yellow on the soft dorsal and caudal fins.

38. The dorsal arm plates are fan shaped with an acute proximal angle and separated.

39. The lateral arm plates also carry a series of long bristle-like spines, dorsal to the arm spines.

40. The plates of the ventral interradial areas are not as coarse as those on the dorsal surface.

41. The trigger, which gives the fish its name, is the leading ray of its dorsal fin which has become bony.

42. When stocking a pool with fish, take care to select healthy individuals with firm, meaty bodies and erect dorsal fins.

43. The pectoral and pelvic fins and the dorsal along the crest of the back play no part in propulsion.

44. The ventral interradial areas are also covered with granules although perhaps not as densely as the dorsal surface.

45. Their armour consisted of large dorsal and ventral oval shields surrounded by a series of smaller plates.

46. The dorsal arm plates are triangular to fan shaped; the first 2-3 dorsal arm plates may be contiguous.

47. We studied the healing of a standardized lesion on the dorsal surface of a four-day chick embryonic wing bud.

48. The dorsal arm plates are fan shaped to rounded triangular and contiguous proximally.

49. The ventral interradial areas are covered with large plates like those of the dorsal surface, spinelets may be present.

50. The dorsal arm plates are roundly hexagonal and contiguous proximally.

51. The ventral interradial areas have similar armament to the dorsal side.

52. The ventral interradial areas are covered with small plates armed with simple rods like those of the dorsal surface.

53. The ventral arm spines are more rugose than the dorsal ones and slightly curved or sabre shaped.

54. The ventral ones are slightly flattened and very rugose; the dorsal ones appear smooth or finely rugose.

55. There is just a touch of yellow along the very top of the dorsal fin.

56. The fish pictured are not fully mature and have yet to achieve the intense red colouring of the caudal and dorsal finnage.

57. Crucian carp are also very similar but goldfish have a less-deep body and a shorter dorsal fin.

58. The ventral interradial areas are also covered by spinelets which are slightly smaller than those of the dorsal side.

59. Its thirteen powerful dorsal spines contain enough poison to kill any human swimmer who accidentally treads on it with a bare foot.

60. The dorsal arm plates are fan to bell shaped not contiguous sometimes with a finely rugose distal edge.