<Table> <Tr> <Th> Group </Th> <Th> Number of species </Th> <Th> Number of individuals </Th> </Tr> <Tr> <Td> Mammals </Td> <Td> 63 </Td> <Td> 524 </Td> </Tr> <Tr> <Td> Birds </Td> <Td> 99 </Td> <Td> 609 </Td> </Tr> <Tr> <Td> Reptiles </Td> <Td> 52 </Td> <Td> 157 </Td> </Tr> <Tr> <Td> Monkeys </Td> <Td> 25 </Td> <Td> 675 </Td> </Tr> <Tr> <Td> Fish </Td> <Td> 226 </Td> <Td> 6288 </Td> </Tr> <Tr> <Td> Invertebrates </Td> <Td> 233 </Td> <Td> 11913 </Td> </Tr> <Tr> <Td> Total </Td> <Td> 698 </Td> <Td> 20166 </Td> </Tr> </Table> <Tr> <Th> Group </Th> <Th> Number of species </Th> <Th> Number of individuals </Th> </Tr> <Tr> <Td> Mammals </Td> <Td> 63 </Td> <Td> 524 </Td> </Tr> <Tr> <Td> Birds </Td> <Td> 99 </Td> <Td> 609 </Td> </Tr>

When did elephant rides stop at london zoo