1. Species Syngnathus abaster Risso, 1827
2. Species Syngnathus acus Linnaeus, 1758
3. Species Syngnathus affinis Günther, 1870
4. Species Syngnathus auliscus (Swain, 1882)
5. Species Syngnathus californiensis Storer, 1845
6. Species Syngnathus caribbaeus Dawson, 1979
7. Species Syngnathus carinatus (Gilbert, 1892)
8. Species Syngnathus caspius Eichwald, 1831
9. Species Syngnathus chihiroe Matsunuma, 2017
10. Species Syngnathus dawsoni (Herald, 1969)
11. Species Syngnathus euchrous Fritzsche, 1980
12. Species Syngnathus exilis (Osburn & Nichols, 1916)
13. Species Syngnathus floridae (Jordan & Gilbert, 1882)
14. Species Syngnathus folletti Herald, 1942
15. Species Syngnathus fuscus Storer, 1839
16. Species Syngnathus insulae Fritzsche, 1980
17. Species Syngnathus louisianae Günther, 1870
18. Species Syngnathus macrobrachium Fritzsche, 1980
19. Species Syngnathus macrophthalmus Duncker, 1915
20. Species Syngnathus makaxi Herald & Dawson, 1972
21. Species Syngnathus pelagicus Linnaeus, 1758
22. Species Syngnathus phlegon Risso, 1827
23. Species Syngnathus rostellatus Nilsson, 1855
24. Species Syngnathus safina Paulus, 1992
25. Species Syngnathus schlegeli Kaup, 1856
26. Species Syngnathus schmidti Popov, 1928
27. Species Syngnathus scovelli (Evermann & Kendall, 1896)
28. Species Syngnathus springeri Herald, 1942
29. Species Syngnathus taenionotus Canestrini, 1871
30. Species Syngnathus temminckii Kaup, 1856
31. Species Syngnathus tenuirostris Rathke, 1837
32. Species Syngnathus texanus Gilbert, 2013
33. Species Syngnathus typhle Linnaeus, 1758
34. Species Syngnathus variegatus Pallas, 1814
35. Species Syngnathus watermeyeri Smith, 1963
36. Species Syngnathus acicularis Jenyns, 1842 accepted as Leptonotus blainvilleanus (Eydoux & Gervais, 1837)
37. Species Syngnathus acusimilis Günther, 1873 accepted as Syngnathus schlegeli Kaup, 1856
38. Species Syngnathus aequoreus Linnaeus, 1758 accepted as Entelurus aequoreus (Linnaeus, 1758) (synonym)
39. Species Syngnathus agassiz Michahelles, 1829 accepted as Syngnathus abaster Risso, 1827
40. Species Syngnathus agassizi Michahelles, 1829 accepted as Syngnathus abaster Risso, 1827 (misspelling)
41. Species Syngnathus agassizii Michahelles, 1829 accepted as Syngnathus abaster Risso, 1827
42. Species Syngnathus algeriensis Günther, 1870 accepted as Syngnathus abaster Risso, 1827
43. Species Syngnathus alternans Günther, 1870 accepted as Syngnathus acus Linnaeus, 1758
44. Species Syngnathus altirostris Ogilby, 1890 accepted as Hippichthys penicillus (Cantor, 1849)
45. Species Syngnathus analicarens Duncker, 1915 accepted as Bryx analicarens (Duncker, 1915)
46. Species Syngnathus andersonii Bleeker, 1858 accepted as Micrognathus andersonii (Bleeker, 1858)
47. Species Syngnathus anguisigola Nardo, 1847 accepted as Syngnathus abaster Risso, 1827
48. Species Syngnathus ansorgii Boulenger, 1910 accepted as Enneacampus ansorgii (Boulenger, 1910)
49. Species Syngnathus arctus (Jenkins & Evermann, 1889) accepted as Cosmocampus arctus (Jenkins & Evermann, 1889)
50. Species Syngnathus argentatus Pallas, 1814 accepted as Syngnathus typhle Linnaeus, 1758
51. Species Syngnathus argulus Peters, 1855 accepted as Microphis argulus (Peters, 1855)
52. Species Syngnathus argus Richardson, 1840 accepted as Stigmatopora argus (Richardson, 1840)
53. Species Syngnathus argyrostictus Kaup, 1856 accepted as Hippichthys penicillus (Cantor, 1849)
54. Species Syngnathus balli (Fowler, 1925) accepted as Cosmocampus balli (Fowler, 1925)
55. Species Syngnathus banneri Herald & Randall, 1972 accepted as Cosmocampus banneri (Herald & Randall, 1972)
56. Species Syngnathus biaculeatus Bloch, 1785 accepted as Syngnathoides biaculeatus (Bloch, 1785)
57. Species Syngnathus bicoarctatus Bleeker, 1857 accepted as Trachyrhamphus bicoarctatus (Bleeker, 1857)
58. Species Syngnathus biserialis Kaup, 1856 accepted as Hippichthys penicillus (Cantor, 1849)
59. Species Syngnathus blainvilleanus Eydoux & Gervais, 1837 accepted as Leptonotus blainvilleanus (Eydoux & Gervais, 1837)
60. Species Syngnathus brachycephalus Poey, 1868 accepted as Cosmocampus brachycephalus (Poey, 1868)
61. Species Syngnathus brachyrhynchus Kaup, 1856 accepted as Syngnathus acus Linnaeus, 1758
62. Species Syngnathus brachysoma Bleeker, 1855 accepted as Choeroichthys brachysoma (Bleeker, 1855)
63. Species Syngnathus brachyurus Bleeker, 1854 accepted as Microphis brachyurus (Bleeker, 1854)
64. Species Syngnathus brevicaudus Castelnau, 1875 accepted as Trachyrhamphus bicoarctatus (Bleeker, 1857)
65. Species Syngnathus brevirostris Rüppell, 1838 accepted as Micrognathus brevirostris (Rüppell, 1838) (synonym)
66. Species Syngnathus bucculentus Rathke, 1837 accepted as Syngnathus abaster Risso, 1827
67. Species Syngnathus budi Bleeker, 1856 accepted as Microphis leiaspis (Bleeker, 1854) (synonym)
68. Species Syngnathus caballus Larrañaga, 1923 accepted as Hippocampus erectus Perry, 1810
69. Species Syngnathus caldwelli Herald & Randall, 1972 accepted as Cosmocampus howensis (Whitley, 1948)
70. Species Syngnathus carce Hamilton, 1822 accepted as Ichthyocampus carce (Hamilton, 1822)
71. Species Syngnathus caretta Klunzinger, 1880 accepted as Pugnaso curtirostris (Castelnau, 1872)
72. Species Syngnathus cayennensis Sauvage, 1882 accepted as Microphis lineatus (Kaup, 1856) (synonym)
73. Species Syngnathus cinctus Ramsay, 1882 accepted as Festucalex cinctus (Ramsay, 1882)
74. Species Syngnathus coccineus Herald, 1940 accepted as Cosmocampus coccineus (Herald, 1940) (synonym)
75. Species Syngnathus conspicillatus Jenyns, 1842 accepted as Corythoichthys conspicillatus (Jenyns, 1842) (synonym)
76. Species Syngnathus corrugatus Weber, 1913 accepted as Bhanotia fasciolata (Duméril, 1870)
77. Species Syngnathus crenulatus Weber, 1913 accepted as Corythoichthys haematopterus (Bleeker, 1851)
78. Species Syngnathus crinitus Jenyns, 1842 accepted as Micrognathus crinitus (Jenyns, 1842)
79. Species Syngnathus curtirostris Castelnau, 1872 accepted as Pugnaso curtirostris (Castelnau, 1872)
80. Species Syngnathus cyanospilos Bleeker, 1854 accepted as Hippichthys cyanospilos (Bleeker, 1854)
81. Species Syngnathus cyanospilus Bleeker, 1854 accepted as Hippichthys cyanospilos (Bleeker, 1854) (misspelling)
82. Species Syngnathus dactyliophorus Bleeker, 1853 accepted as Dunckerocampus dactyliophorus (Bleeker, 1853) (synonym)
83. Species Syngnathus darrosanus Dawson & Randall, 1975 accepted as Cosmocampus darrosanus (Dawson & Randall, 1975)
84. Species Syngnathus delalandi Kaup, 1856 accepted as Syngnathus acus Linnaeus, 1758
85. Species Syngnathus djarong Bleeker, 1853 accepted as Hippichthys heptagonus Bleeker, 1849
86. Species Syngnathus dumerilii Duméril, 1870 accepted as Syngnathus rostellatus Nilsson, 1855
87. Species Syngnathus dunckeri Metzelaar, 1919 accepted as Bryx dunckeri (Metzelaar, 1919)
88. Species Syngnathus elucens Poey, 1868 accepted as Cosmocampus elucens (Poey, 1868)
89. Species Syngnathus ethon Risso, 1827 accepted as Syngnathus abaster Risso, 1827
90. Species Syngnathus fasciatus Risso, 1810 accepted as Nerophis maculatus Rafinesque, 1810 (synonym)
91. Species Syngnathus fasciatus Gray, 1830 accepted as Corythoichthys haematopterus (Bleeker, 1851) (ambiguous synonym)
92. Species Syngnathus fasciolatus Duméril, 1870 accepted as Bhanotia fasciolata (Duméril, 1870)
93. Species Syngnathus flavescens Kaup, 1856 accepted as Syngnathus abaster Risso, 1827
94. Species Syngnathus flavofasciatus Rüppell, 1838 accepted as Corythoichthys flavofasciatus (Rüppell, 1838)
95. Species Syngnathus fluviatilis Peters, 1852 accepted as Microphis fluviatilis (Peters, 1852)
96. Species Syngnathus foliatus Shaw, 1804 accepted as Phyllopteryx taeniolatus (Lacepède, 1804)
97. Species Syngnathus gastrotaenia Bleeker, 1853 accepted as Hippichthys spicifer (Rüppell, 1838)
98. Species Syngnathus gracilis Steindachner, 1901 accepted as Hippichthys spicifer (Rüppell, 1838)
99. Species Syngnathus griseolineatus Ayres, 1854 accepted as Syngnathus leptorhynchus Girard, 1854 accepted as Syngnathus californiensis Storer, 1845 (unaccepted > junior subjective synonym)
100. Species Syngnathus haematopterus Bleeker, 1851 accepted as Corythoichthys haematopterus (Bleeker, 1851)
101. Species Syngnathus hardwickii Gray, 1830 accepted as Solegnathus hardwickii (Gray, 1830)
102. Species Syngnathus helfrichii Bleeker, 1855 accepted as Hippichthys heptagonus Bleeker, 1849
103. Species Syngnathus hildebrandi Herald, 1965 accepted as Cosmocampus hildebrandi (Herald, 1965)
104. Species Syngnathus hippocampus Linnaeus, 1758 accepted as Hippocampus hippocampus (Linnaeus, 1758)
105. Species Syngnathus hunnii Bleeker, 1860 accepted as Hippichthys spicifer (Rüppell, 1838)
106. Species Syngnathus independencia Hildebrand, 1946 accepted as Cosmocampus coccineus (Herald, 1940)
107. Species Syngnathus investigatoris Hora, 1926 accepted as Cosmocampus investigatoris (Hora, 1926)
108. Species Syngnathus jonesii Günther, 1874 accepted as Micrognathus crinitus (Jenyns, 1842)
109. Species Syngnathus kaupi Bleeker, 1863 accepted as Enneacampus kaupi (Bleeker, 1863)
110. Species Syngnathus kaupii (Bleeker, 1863) accepted as Enneacampus kaupi (Bleeker, 1863) (misspelling)
111. Species Syngnathus koilomatodon Bleeker, 1858 accepted as Halicampus grayi Kaup, 1856
112. Species Syngnathus kuhlii Kaup, 1856 accepted as Hippichthys cyanospilos (Bleeker, 1854)
113. Species Syngnathus leiaspis Bleeker, 1854 accepted as Microphis leiaspis (Bleeker, 1854) (synonym)
114. Species Syngnathus leptorhynchus Girard, 1854 accepted as Syngnathus californiensis Storer, 1845 (unaccepted > junior subjective synonym)
115. Species Syngnathus lumbriciformis Jenyns, 1835 accepted as Nerophis lumbriciformis (Jenyns, 1835)
116. Species Syngnathus manadensis Bleeker, 1856 accepted as Microphis manadensis (Bleeker, 1856)
117. Species Syngnathus margaritifer Peters, 1868 accepted as Vanacampus margaritifer (Peters, 1868)
118. Species Syngnathus matterni (Fowler, 1918) accepted as Hippichthys heptagonus Bleeker, 1849
119. Species Syngnathus maxweberi Whitley, 1933 accepted as Cosmocampus maxweberi (Whitley, 1933)
120. Species Syngnathus melanopleura Bleeker, 1858 accepted as Doryrhamphus excisus Kaup, 1856
121. Species Syngnathus mento Bleeker, 1856 accepted as Microphis mento (Bleeker, 1856)
122. Species Syngnathus microchirus Moreau, 1891 accepted as Syngnathus abaster Risso, 1827
123. Species Syngnathus micronotopterus Fowler, 1938 accepted as Micrognathus micronotopterus (Fowler, 1938)
124. Species Syngnathus mindii Meek & Hildebrand, 1923 accepted as Pseudophallus mindii (Meek & Hildebrand, 1923)
125. Species Syngnathus modestus Sauvage, 1879 accepted as Vanacampus poecilolaemus (Peters, 1868)
126. Species Syngnathus mollisoni Scott, 1955 accepted as Mitotichthys mollisoni (Scott, 1955)
127. Species Syngnathus mossambicus Peters, 1855 accepted as Hippichthys cyanospilos (Bleeker, 1854)
128. Species Syngnathus nigrolineatus Eichwald, 1831 accepted as Syngnathus abaster Risso, 1827
129. Species Syngnathus nitidus Günther, 1873 accepted as Halicampus nitidus (Günther, 1873)
130. Species Syngnathus norae Waite, 1910 accepted as Leptonotus norae (Waite, 1910)
131. Species Syngnathus olssoni Johnels, 1954 accepted as Enneacampus ansorgii (Boulenger, 1910)
132. Species Syngnathus ophidion Linnaeus, 1758 accepted as Nerophis ophidion (Linnaeus, 1758) (synonym)
133. Species Syngnathus papacinus Risso, 1810 accepted as Nerophis maculatus Rafinesque, 1810
134. Species Syngnathus parvicarinatus Dawson, 1978 accepted as Hippichthys parvicarinatus (Dawson, 1978)
135. Species Syngnathus parviceps Ramsay & Ogilby, 1886 (unaccepted)
136. Species Syngnathus pelagicus Risso, 1810 (unaccepted)
137. Species Syngnathus penicillus Cantor, 1849 (unaccepted)
138. Species Syngnathus perlatus Lay & Bennett, 1839 (unaccepted)
139. Species Syngnathus phillipi Lucas, 1891 (unaccepted)
140. Species Syngnathus platyrhynchus Duméril, 1870 (unaccepted)
141. Species Syngnathus poecilolaemus Peters, 1868 (unaccepted)
142. Species Syngnathus polyacanthus Bleeker, 1856 (unaccepted)
143. Species Syngnathus ponticus Pallas, 1814 (unaccepted)
144. Species Syngnathus pulchellus Boulenger, 1915 (unaccepted)
145. Species Syngnathus pyrois Risso, 1827 (unaccepted)
146. Species Syngnathus randalli Herald, 1965 (unaccepted)
147. Species Syngnathus rondeletii Delaroche, 1809 (unaccepted)
148. Species Syngnathus rotundatus Michahelles, 1829 (unaccepted)
149. Species Syngnathus rousseau Kaup, 1856 (unaccepted)
150. Species Syngnathus rubescens Risso, 1810 (unaccepted)
151. Species Syngnathus semifasciatus Günther, 1870 (unaccepted)
152. Species Syngnathus serratus Temminck & Schlegel, 1850 (unaccepted)
153. Species Syngnathus spicifer Rüppell, 1838 (unaccepted)
154. Species Syngnathus superciliaris Günther, 1880 (unaccepted)
155. Species Syngnathus tapeinosoma Bleeker, 1854 (unaccepted)
156. Species Syngnathus tetragonous Mitchill, 1814 (unaccepted)
157. Species Syngnathus tetragonus Thunberg, 1776 (unaccepted)
158. Species Syngnathus tetrophthalmus Bleeker, 1858 (unaccepted)
159. Species Syngnathus tetropthalmus Bleeker, 1858 (unaccepted, misspelling)
160. Species Syngnathus thyphle Linnaeus, 1758 (unaccepted, misspelling)
161. Species Syngnathus tigris Castelnau, 1879 (unaccepted)
162. Species Syngnathus torrei (Nichols, 1912) (unaccepted)
163. Species Syngnathus trachypoma Günther, 1884 (unaccepted)
164. Species Syngnathus tuckeri Scott, 1942 (unaccepted)
165. Species Syngnathus tweedlei Meek & Hildebrand, 1923 (unaccepted)
166. Species Syngnathus uncinatus Weber, 1913 (unaccepted)
167. Species Syngnathus vercoi Waite & Hale, 1921 (unaccepted)
168. Species Syngnathus verreauxianus Duméril, 1870 (unaccepted)
169. Species Syngnathus viridis Risso, 1810 (unaccepted)
170. Species Syngnathus wardi (Whitley, 1948) (unaccepted)
171. Species Syngnathus zambezensis Peters, 1855 (unaccepted)
172. Species Syngnathus zanzibarensis Günther, 1867 (unaccepted)
173. Species Syngnathus robertsi (uncertain > unassessed)

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