1. Species Ancistrus abilhoai Bifi, Pavanelli & Zawadzki, 2009
2. Species Ancistrus agostinhoi Bifi, Pavanelli & Zawadzki, 2009
3. Species Ancistrus aguaboensis Fisch-Muller, Mazzoni & Weber, 2001
4. Species Ancistrus amaris de Souza, Taphorn & Armbruster, 2019
5. Species Ancistrus bodenhameri Schultz, 1944
6. Species Ancistrus bolivianus (Steindachner, 1915)
7. Species Ancistrus brevifilis Eigenmann, 1920
8. Species Ancistrus brevipinnis (Regan, 1904)
9. Species Ancistrus bufonius (Valenciennes, 1840)
10. Species Ancistrus caucanus Fowler, 1943
11. Species Ancistrus centrolepis Regan, 1913
12. Species Ancistrus chagresi Eigenmann & Eigenmann, 1889
13. Species Ancistrus cirrhosus (Valenciennes, 1836)
14. Species Ancistrus claro Knaack, 1999
15. Species Ancistrus clementinae Rendahl, 1937
16. Species Ancistrus cryptophthalmus Reis, 1987
17. Species Ancistrus cuiabae Knaack, 1999
18. Species Ancistrus damasceni (Steindachner, 1907)
19. Species Ancistrus dolichopterus Kner, 1854
20. Species Ancistrus dubius Eigenmann & Eigenmann, 1889
21. Species Ancistrus erinaceus (Valenciennes, 1840)
22. Species Ancistrus eustictus (Fowler, 1945)
23. Species Ancistrus falconensis Taphorn, Armbruster & Rodríguez-Olarte, 2010
24. Species Ancistrus formoso Sabino & Trajano, 1997
25. Species Ancistrus fulvus (Holly, 1929)
26. Species Ancistrus galani Pérez & Viloria, 1994
27. Species Ancistrus greeni (Isbrücker, 2001)
28. Species Ancistrus gymnorhynchus Kner, 1854
29. Species Ancistrus heterorhynchus (Regan, 1912)
30. Species Ancistrus hoplogenys (Günther, 1864)
31. Species Ancistrus jataiensis Fisch-Muller, Cardoso, da Silva & Bertaco, 2005
32. Species Ancistrus jelskii (Steindachner, 1876)
33. Species Ancistrus karajas de Oliveira, Rapp Py-Daniel, Zawadzki & Zuanon, 2016
34. Species Ancistrus kellerae de Souza, Taphorn & Armbruster, 2019
35. Species Ancistrus krenakarore de Oliveira, Rapp Py-Daniel, Zawadzki & Zuanon, 2016
36. Species Ancistrus latifrons (Günther, 1869)
37. Species Ancistrus leoni de Souza, Taphorn & Armbruster, 2019
38. Species Ancistrus leucostictus (Günther, 1864)
39. Species Ancistrus lineolatus Fowler, 1943
40. Species Ancistrus lithurgicus Eigenmann, 1912
41. Species Ancistrus macrophthalmus (Pellegrin, 1912)
42. Species Ancistrus maculatus (Steindachner, 1881)
43. Species Ancistrus malacops (Cope, 1872)
44. Species Ancistrus maldonadoi Bifi & Ortega, 2020
45. Species Ancistrus maracasae Fowler, 1946
46. Species Ancistrus marcapatae (Regan, 1904)
47. Species Ancistrus martini Schultz, 1944
48. Species Ancistrus mattogrossensis Miranda Ribeiro, 1912
49. Species Ancistrus maximus de Oliveira, Zuanon, Zawadzki & Py-Daniel, 2015
50. Species Ancistrus megalostomus Pearson, 1924
51. Species Ancistrus minutus Fisch-Muller, Mazzoni & Weber, 2001
52. Species Ancistrus miracollis Bifi, de Oliveira & Rapp Py-Daniel, 2019
53. Species Ancistrus montanus (Regan, 1904)
54. Species Ancistrus mullerae Bifi, Pavanelli & Zawadzki, 2009
55. Species Ancistrus multispinis (Regan, 1912)
56. Species Ancistrus nudiceps (Müller & Troschel, 1849)
57. Species Ancistrus occidentalis (Regan, 1904)
58. Species Ancistrus occloi Eigenmann, 1928
59. Species Ancistrus parecis Fisch-Muller, Cardoso, da Silva & Bertaco, 2005
60. Species Ancistrus patronus de Souza, Taphorn & Armbruster, 2019
61. Species Ancistrus pirareta Muller, 1989
62. Species Ancistrus piriformis Muller, 1989
63. Species Ancistrus ranunculus Muller, Rapp Py-Daniel & Zuanon, 1994
64. Species Ancistrus reisi Fisch-Muller, Cardoso, da Silva & Bertaco, 2005
65. Species Ancistrus salgadae Fowler, 1941
66. Species Ancistrus saudades de Souza, Taphorn & Armbruster, 2019
67. Species Ancistrus sericeus (Cope, 1872)
68. Species Ancistrus shuar Provenzano & Barriga Salazar, 2018
69. Species Ancistrus spinosus Meek & Hildebrand, 1916
70. Species Ancistrus stigmaticus Eigenmann & Eigenmann, 1889
71. Species Ancistrus tamboensis Fowler, 1945
72. Species Ancistrus taunayi Miranda Ribeiro, 1918
73. Species Ancistrus temminckii (Valenciennes, 1840)
74. Species Ancistrus tolima Taphorn, Armbruster, Villa-Navarro & Ray, 2013
75. Species Ancistrus tombador Fisch-Muller, Cardoso, da Silva & Bertaco, 2005
76. Species Ancistrus trinitatis (Günther, 1864)
77. Species Ancistrus triradiatus Eigenmann, 1918
78. Species Ancistrus variolus (Cope, 1872)
79. Species Ancistrus verecundus Fisch-Muller, Cardoso, da Silva & Bertaco, 2005
80. Species Ancistrus vericaucanus Taphorn, Armbruster, Villa-Navarro & Ray, 2013
81. Species Ancistrus vittatus
82. Species Ancistrus yutajae de Souza, Taphorn & Armbruster, 2019
83. Species Ancistrus alga (Cope, 1872) accepted as Ancistrus hoplogenys (Günther, 1864)
84. Species Ancistrus anisitsi (Eigenmann & Kennedy, 1903) accepted as Pterygoplichthys anisitsi Eigenmann & Kennedy, 1903 (senior synonym)
85. Species Ancistrus annectens Regan, 1904 accepted as Hypostomus annectens (Regan, 1904)
86. Species Ancistrus barbatus Steindachner, 1911 accepted as Pseudancistrus barbatus (Valenciennes, 1840)
87. Species Ancistrus barrae Steindachner, 1910 accepted as Megalancistrus barrae (Steindachner, 1910)
88. Species Ancistrus baudensis Fowler, 1945 accepted as Ancistrus centrolepis Regan, 1913 (synonym)
89. Species Ancistrus bovallii Regan, 1906 accepted as Paralithoxus bovallii (Regan, 1906)
90. Species Ancistrus brachyurus Kner, 1854 accepted as Dekeyseria brachyura (Kner, 1854)
91. Species Ancistrus calamita (Valenciennes, 1840) accepted as Ancistrus bufonius (Valenciennes, 1840) (junior synonym)
92. Species Ancistrus coquenani Steindachner, 1915 accepted as Pseudancistrus coquenani (Steindachner, 1915)
93. Species Ancistrus fuesslii Steindachner, 1911 accepted as Dolichancistrus fuesslii (Steindachner, 1911)
94. Species Ancistrus füsslii Steindachner, 1911 accepted as Dolichancistrus fuesslii (Steindachner, 1911) (unaccepted > misspelling - incorrect subsequent spelling)
95. Species Ancistrus gibbiceps Kner, 1854 accepted as Pterygoplichthys gibbiceps (Kner, 1854)
96. Species Ancistrus guentheri Regan, 1904 accepted as Pseudancistrus guentheri (Regan, 1904)
97. Species Ancistrus lituratus Kner, 1854 accepted as Pterygoplichthys lituratus (Kner, 1854)
98. Species Ancistrus longimanus Kner, 1854 accepted as Pterygoplichthys etentaculatus (Spix & Agassiz, 1829)
99. Species Ancistrus maracasse Fowler, 1946 accepted as Ancistrus maracasae Fowler, 1946 (unaccepted > misspelling - incorrect subsequent spelling)
100. Species Ancistrus mattogrossenssis Miranda Ribeiro, 1912 accepted as Ancistrus mattogrossensis Miranda Ribeiro, 1912 (unaccepted > misspelling - incorrect subsequent spelling)
101. Species Ancistrus medians Kner, 1854 accepted as Hemiancistrus medians (Kner, 1854)
102. Species Ancistrus melas Eigenmann, 1916 accepted as Ancistrus centrolepis Regan, 1913
103. Species Ancistrus multiradiatus (Hancock, 1828) accepted as Pterygoplichthys multiradiatus (Hancock, 1828) (senior synonym)
104. Species Ancistrus multispinis Holly, 1929 accepted as Peckoltia multispinis (Holly, 1929)
105. Species Ancistrus multispinus (Regan, 1912) accepted as Ancistrus multispinis (Regan, 1912) (unaccepted > misspelling - incorrect subsequent spelling)
106. Species Ancistrus mystacinus Kner, 1854 accepted as Lasiancistrus guacharote (Valenciennes, 1840) (synonym)
107. Species Ancistrus pictus Kner, 1854 accepted as Dekeyseria picta (Kner, 1854)
108. Species Ancistrus planiceps Meek & Hildebrand, 1913 accepted as Lasiancistrus caucanus Eigenmann, 1912 (synonym)
109. Species Ancistrus pulcher Steindachner, 1915 accepted as Dekeyseria pulchra (Steindachner, 1915)
110. Species Ancistrus punctatus (Steindachner, 1881) accepted as Ancistrus hoplogenys (Günther, 1864)
111. Species Ancistrus rothschildi (Regan, 1905) accepted as Ancistrus gymnorhynchus Kner, 1854 (junior synonym)
112. Species Ancistrus sabaji (Armbruster, 2003) accepted as Hemiancistrus sabaji (Armbruster, 2003)
113. Species Ancistrus scaphirhynchus Kner, 1854 accepted as Dekeyseria scaphirhyncha (Kner, 1854)
114. Species Ancistrus snethlageae Steindachner, 1911 accepted as Ancistomus snethlageae (Steindachner, 1911)
115. Species Ancistrus tectirostris (Cope, 1872) accepted as Ancistrus hoplogenys (Günther, 1864)
116. Species Ancistrus temmincki (Valenciennes, 1840) accepted as Ancistrus temminckii (Valenciennes, 1840) (unaccepted > misspelling - incorrect subsequent spelling)
117. Species Ancistrus undecimalis (Steindachner, 1878) accepted as Pterygoplichthys undecimalis (Steindachner, 1878)
118. Species Ancistrus yaravi Steindachner, 1915 accepted as Neblinichthys yaravi (Steindachner, 1915)

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