The larval development of Pseudorasbora parva: (40) One day after hatching (DAH); (41) Two DAH (O, the first swim bladder); (42) Three DAH; (43) Four DAH; (44) Five DAH (P, dorsal fin); (45) Six DAH (Q, intestinal tube wriggle); (46) Nine DAH (R, the second swim bladder); (47) Eleven DAH (S, anal fin); (48) Thirteen DAH (T, pectoral fin); (49) Twenty DAH (U, fin fold). Scale bars: 40–48 = 0.5 mm, 49 = 1.0 mm.