This happens with elkhorn and stagshorn corals and when these sympatric corals spawn at the same time, F1 hybrids can be formed.
The importance of behavioral separation as a mechanism for promoting sympatric speciation in a heterogeneous or patchwork landscape is highlighted in John Maynard Smith's seminal paper on sympatric speciation.
Lurdusaurus was contemporaneous with the bizarre large theropod Suchomimus, which some believe to be synonymous with the slightly earlier Baryonyx from England, and with the sympatric Ouranosaurus, notable for its tall-spined vertebrae.
Nepenthes eustachya × N. longifolia has been recorded from a number of locations near Payakumbuh and Sibolga, where its parent species are sympatric.
It is most similar to P. gracilis with which it is sympatric in the Erongo and Kunene regions of Namibia.
The iris is typically red, but can, at least in the Amazon basin, sometimes be dull yellow (however, due to the red eye-ring, the iris never appears as conspicuously white as in adults of the sympatric subspecies of the Plumbeous Pigeon, P. plumbea).
It is sympatric with the more widespread Salmo cettii (Mediterranean trout), and separated from it by the breeding time: S. cettii spawns in early spring.
The White-crested Turaco has been shown to hybridise with the sympatric Prince Ruspoli's Turaco (Tauraco ruspolii) that contributed more to concerns about Ruspoli's Turaco that is considered endangered.