the parasitic life stage of a freshwater mussel
                                                            
                                                     
                        
                                                
                        
                        
                            term for freshwater mussel larvae that possess little or no automotive abilities that are ready to be released from the female mussel and usually attach to a vertebrate host for continued life cycle development
                                                            
                                                     
                        
                                                
                        
                        
                            a parasitic larva of certain freshwater mussels with hooks for attaching to a host fish.