diff --git a/api/handler.go b/api/handler.go
index 98c8952..b7999d8 100644
--- a/api/handler.go
+++ b/api/handler.go
@@ -32,6 +32,7 @@ func Handler() *mux.Router {
 	m.Get(router.Species).Handler(handler(serveSpecies))
 	m.Get(router.CreateSpecies).Handler(handler(serveCreateSpecies))
 	m.Get(router.SpeciesList).Handler(handler(serveSpeciesList))
+	m.Get(router.UpdateSpecies).Handler(handler(serveUpdateSpecies))
 
 	return m
 }
diff --git a/api/species.go b/api/species.go
index 7ff94ff..1e218a4 100644
--- a/api/species.go
+++ b/api/species.go
@@ -57,3 +57,22 @@ func serveSpeciesList(w http.ResponseWriter, r *http.Request) error {
 
 	return writeJSON(w, species)
 }
+
+func serveUpdateSpecies(w http.ResponseWriter, r *http.Request) error {
+	id, _ := strconv.ParseInt(mux.Vars(r)["Id"], 10, 0)
+	var species models.Species
+	err := json.NewDecoder(r.Body).Decode(&species)
+	if err != nil {
+		return err
+	}
+
+	updated, err := store.Species.Update(id, &species)
+	if err != nil {
+		return err
+	}
+	if updated {
+		w.WriteHeader(http.StatusOK)
+	}
+
+	return writeJSON(w, species)
+}
diff --git a/api/species_test.go b/api/species_test.go
index 490c62c..a0c003a 100644
--- a/api/species_test.go
+++ b/api/species_test.go
@@ -88,3 +88,33 @@ func TestSpecies_List(t *testing.T) {
 		t.Errorf("got species %+v but wanted species %+v", species, want)
 	}
 }
+
+func TestSpecies_Update(t *testing.T) {
+	setup()
+
+	want := &models.Species{Id: 1, GenusId: 1, SpeciesName: "Test Species"}
+
+	calledPut := false
+	store.Species.(*models.MockSpeciesService).Update_ = func(id int64, species *models.Species) (bool, error) {
+		if id != want.Id {
+			t.Errorf("wanted request for species %d but got %d", want.Id, id)
+		}
+		if !normalizeDeepEqual(want, species) {
+			t.Errorf("wanted request for species %d but got %d", want, species)
+		}
+		calledPut = true
+		return true, nil
+	}
+
+	success, err := apiClient.Species.Update(1, want)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if !calledPut {
+		t.Error("!calledPut")
+	}
+	if !success {
+		t.Error("!success")
+	}
+}
diff --git a/datastore/species.go b/datastore/species.go
index cccdd07..c3087c4 100644
--- a/datastore/species.go
+++ b/datastore/species.go
@@ -39,3 +39,25 @@ func (s *speciesStore) List(opt *models.SpeciesListOptions) ([]*models.Species,
 	}
 	return species, nil
 }
+
+func (s *speciesStore) Update(id int64, species *models.Species) (bool, error) {
+	_, err := s.Get(id)
+	if err != nil {
+		return false, err
+	}
+
+	if id != species.Id {
+		return false, models.ErrSpeciesNotFound
+	}
+
+	changed, err := s.dbh.Update(species)
+	if err != nil {
+		return false, err
+	}
+
+	if changed == 0 {
+		return false, ErrNoRowsUpdated
+	}
+
+	return true, nil
+}
diff --git a/datastore/species_test.go b/datastore/species_test.go
index 62235ba..1d7c3cd 100644
--- a/datastore/species_test.go
+++ b/datastore/species_test.go
@@ -111,8 +111,8 @@ func TestSpeciesStore_Update_db(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	created := &model.Species{GenusId: genus.Id, SpeciesName: "Test Species"}
-	_, err := d.Species.Create(created)
+	species := &models.Species{GenusId: genus.Id, SpeciesName: "Test Species"}
+	created, err := d.Species.Create(species)
 	if err != nil {
 		t.Fatal(err)
 	}