diff --git a/characteristic_types.go b/characteristic_types.go
index 2c5b1c4..5cce602 100644
--- a/characteristic_types.go
+++ b/characteristic_types.go
@@ -30,6 +30,7 @@ type CharacteristicTypeBase struct {
 type CharacteristicType struct {
 	*CharacteristicTypeBase
 	Characteristics NullSliceInt64 `db:"characteristics" json:"characteristics"`
+	SortOrder       int64          `db:"sort_order" json:"sortOrder"`
 }
 
 type CharacteristicTypes []*CharacteristicType
@@ -60,7 +61,8 @@ func (c CharacteristicTypeService) list(val *url.Values) (entity, error) {
 	}
 
 	var vals []interface{}
-	sql := `SELECT ct.*, array_agg(c.id) AS characteristics
+	sql := `SELECT ct.*, array_agg(c.id) AS characteristics,
+			rank() OVER (ORDER BY ct.characteristic_type_name) AS sort_order
 			FROM characteristic_types ct
 			INNER JOIN characteristics c ON c.characteristic_type_id=ct.id`
 
@@ -89,7 +91,7 @@ func (c CharacteristicTypeService) list(val *url.Values) (entity, error) {
 
 func (c CharacteristicTypeService) get(id int64, dummy string) (entity, error) {
 	var characteristic_type CharacteristicType
-	sql := `SELECT ct.*, array_agg(c.id) AS characteristics
+	sql := `SELECT ct.*, array_agg(c.id) AS characteristics, 0 AS sort_order
 			FROM characteristic_types ct
 			INNER JOIN characteristics c ON c.characteristic_type_id=ct.id
 			WHERE ct.id=$1
diff --git a/characteristics.go b/characteristics.go
index 8070765..b323c32 100644
--- a/characteristics.go
+++ b/characteristics.go
@@ -20,7 +20,7 @@ type CharacteristicBase struct {
 	Id                   int64     `json:"id,omitempty"`
 	CharacteristicName   string    `db:"characteristic_name" json:"characteristicName"`
 	CharacteristicTypeId int64     `db:"characteristic_type_id" json:"characteristicType"`
-	Sort                 NullInt64 `db:"sort" json:"sort"`
+	SortOrder            NullInt64 `db:"sort_order" json:"sortOrder"`
 	CreatedAt            time.Time `db:"created_at" json:"createdAt"`
 	UpdatedAt            time.Time `db:"updated_at" json:"updatedAt"`
 	DeletedAt            NullTime  `db:"deleted_at" json:"deletedAt"`
diff --git a/migrations/00006_AddCharacteristics_up.sql b/migrations/00006_AddCharacteristics_up.sql
index 1c369e8..62b7d4f 100644
--- a/migrations/00006_AddCharacteristics_up.sql
+++ b/migrations/00006_AddCharacteristics_up.sql
@@ -5,7 +5,7 @@ CREATE TABLE characteristics (
     id BIGSERIAL NOT NULL,
     characteristic_name TEXT NOT NULL,
     characteristic_type_id BIGINT NOT NULL,
-    sort BIGINT NULL,
+    sort_order BIGINT NULL,
 
     created_at TIMESTAMP WITH TIME ZONE NOT NULL,
     updated_at TIMESTAMP WITH TIME ZONE NOT NULL,
diff --git a/species.go b/species.go
index 2003447..fed8894 100644
--- a/species.go
+++ b/species.go
@@ -42,6 +42,7 @@ type Species struct {
 	GenusName    string         `db:"genus_name" json:"genusName"`
 	Strains      NullSliceInt64 `db:"strains" json:"strains"`
 	TotalStrains int64          `db:"total_strains" json:"totalStrains"`
+	SortOrder    int64          `db:"sort_order" json:"sortOrder"`
 }
 
 type ManySpecies []*Species
@@ -79,7 +80,8 @@ func (s SpeciesService) list(val *url.Values) (entity, error) {
 
 	var vals []interface{}
 	sql := `SELECT sp.*, g.genus_name, array_agg(st.id) AS strains,
-			COUNT(st) AS total_strains
+			COUNT(st) AS total_strains,
+			rank() OVER (ORDER BY sp.species_name ASC) AS sort_order
 			FROM species sp
 			INNER JOIN genera g ON g.id=sp.genus_id AND LOWER(g.genus_name)=$1
 			LEFT OUTER JOIN strains st ON st.species_id=sp.id`
@@ -110,7 +112,7 @@ func (s SpeciesService) list(val *url.Values) (entity, error) {
 func (s SpeciesService) get(id int64, genus string) (entity, error) {
 	var species Species
 	q := `SELECT sp.*, g.genus_name, array_agg(st.id) AS strains,
-		COUNT(st) AS total_strains
+		COUNT(st) AS total_strains, 0 AS sort_order
 		FROM species sp
 		INNER JOIN genera g ON g.id=sp.genus_id AND LOWER(g.genus_name)=$1
 		LEFT OUTER JOIN strains st ON st.species_id=sp.id
diff --git a/strains.go b/strains.go
index 43c5ccb..ea9e2c1 100644
--- a/strains.go
+++ b/strains.go
@@ -44,6 +44,7 @@ type Strain struct {
 	*StrainBase
 	Measurements      NullSliceInt64 `db:"measurements" json:"measurements"`
 	TotalMeasurements int64          `db:"total_measurements" json:"totalMeasurements"`
+	SortOrder         int64          `db:"sort_order" json:"sortOrder"`
 }
 
 type Strains []*Strain
@@ -80,7 +81,8 @@ func (s StrainService) list(val *url.Values) (entity, error) {
 	}
 
 	var vals []interface{}
-	sql := `SELECT st.*, array_agg(m.id) AS measurements, COUNT(m) AS total_measurements
+	sql := `SELECT st.*, array_agg(m.id) AS measurements, COUNT(m) AS total_measurements,
+		rank() OVER (ORDER BY sp.species_name ASC, st.type_strain ASC, st.strain_name ASC) AS sort_order
 		FROM strains st
 		INNER JOIN species sp ON sp.id=st.species_id
 		INNER JOIN genera g ON g.id=sp.genus_id AND LOWER(g.genus_name)=$1
@@ -99,7 +101,7 @@ func (s StrainService) list(val *url.Values) (entity, error) {
 		sql += " WHERE (" + strings.Join(conds, ") AND (") + ")"
 	}
 
-	sql += " GROUP BY st.id, st.species_id;"
+	sql += " GROUP BY st.id, st.species_id, sp.species_name;"
 
 	strains := make(Strains, 0)
 	err := DBH.Select(&strains, sql, vals...)
@@ -111,7 +113,8 @@ func (s StrainService) list(val *url.Values) (entity, error) {
 
 func (s StrainService) get(id int64, genus string) (entity, error) {
 	var strain Strain
-	q := `SELECT st.*, array_agg(m.id) AS measurements, COUNT(m) AS total_measurements
+	q := `SELECT st.*, array_agg(m.id) AS measurements, COUNT(m) AS total_measurements,
+		0 AS sort_order
 		FROM strains st
 		INNER JOIN species sp ON sp.id=st.species_id
 		INNER JOIN genera g ON g.id=sp.genus_id AND LOWER(g.genus_name)=$1