Ovalentaria
Ovalentaria is a clade of ray-finned fishes within the Percomorpha, referred to as a subseries. It is made up of a group of fish families which are referred to in Fishes of the World's fifth edition as incertae sedis, as well as the orders Mugiliformes, Cichliformes, and Blenniiformes. It was named by W. L. Smith and T. J. Near in Wainwright et al. based on a molecular phylogeny, but the authors suggested that the group was united by the presence of demersal eggs that are attached to a substrate. Some authors have used the ordinal name Stiassnyiformes for a clade including Mugiloidei, Plesiopidae, Blenniiformes, Atherinomorpha, and Cichlidae, and this grouping does appear to be monophyletic.
Classification
Based on the Catalog of Fishes, with additional clade names added when necessary:- Subseries Ovalentaria
- * Infraseries Atherinomorpha
- ** Order Atheriniformes
- *** Suborder Atherinopsoidei
- **** Family Atherinopsidae
- *** Suborder Atherinoidei
- **** Family Atherinidae
- **** Family Bedotiidae
- **** Family Melanotaeniidae
- **** Family Pseudomugilidae
- **** Family Telmatherinidae
- **** Family Notocheiridae
- **** Family Isonidae
- **** Family Atherionidae
- **** Family Dentatherinidae
- **** Family Phallostethidae
- ** Order Beloniformes
- *** Suborder Exocoetoidei
- **** Superfamily Scomberesocoidea
- ***** Family Scomberesocidae
- ***** Family Belonidae
- **** Superfamily Exocoetoidea
- ***** Family Hemiramphidae
- ***** Family Zenarchopteridae
- ***** Family Exocoetidae
- *** Suborder Adrianichthyoidei
- **** Family Adrianichthyidae
- ** Order Cyprinodontiformes
- *** Suborder Aplocheiloidei
- **** Family Aplocheilidae
- **** Family Nothobranchiidae
- **** Family Rivulidae
- *** Suborder Cyprinodontoidei
- **** Family Pantanodontidae
- **** Family Fundulidae
- **** Family Cyprinodontidae
- **** Family Profundulidae
- **** Family Goodeidae
- **** Family Fluviphylacidae
- **** Family Anablepidae
- **** Family Poecilidae
- **** Family Aphaniidae
- **** Family Valenciidae
- **** Family Procatopodidae
- *Order Cichliformes
- ** Family Polycentridae
- ** Family Cichlidae
- ** Family Pholidichthyidae
- * Order Mugiliformes
- ** Family Ambassidae
- ** Family Mugilidae
- * Order Blenniiformes
- ** Family Pseudochromidae
- ** Family Plesiopidae
- ** Family Pomacentridae
- ** Family Embiotocidae
- ** Family Grammatidae
- ** Family Opistognathidae
- ** Suborder Gobiesocoidei
- *** Family Gobiesocidae
- **Suborder Blennioidei
- *** Family Tripterygiidae
- *** Family Blenniidae
- *** Family Clinidae
- *** Family Labrisomidae
- *** Family Chaenopsidae
- *** Family Dactyloscopidae